diff --git a/.gitignore b/.gitignore
index c798be9..bac39c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
-.svn
 *~
 *.kate-swp
 .*.swp
 .idea
+node_modules/
+/composer.lock
+/vendor/
diff --git a/.jshintignore b/.jshintignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/.jshintignore
@@ -0,0 +1 @@
+node_modules
diff --git a/ContributionScores.i18n.php b/ContributionScores.i18n.php
deleted file mode 100644
index d6a010c..0000000
--- a/ContributionScores.i18n.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-/**
- * This is a backwards-compatibility shim, generated by:
- * https://git.wikimedia.org/blob/mediawiki%2Fcore.git/HEAD/maintenance%2FgenerateJsonI18n.php
- *
- * Beginning with MediaWiki 1.23, translation strings are stored in json files,
- * and the EXTENSION.i18n.php file only exists to provide compatibility with
- * older releases of MediaWiki. For more information about this migration, see:
- * https://www.mediawiki.org/wiki/Requests_for_comment/Localisation_format
- *
- * This shim maintains compatibility back to MediaWiki 1.17.
- */
-$messages = array();
-if ( !function_exists( 'wfJsonI18nShim9e08550f702d6269' ) ) {
-	function wfJsonI18nShim9e08550f702d6269( $cache, $code, &$cachedData ) {
-		$codeSequence = array_merge( array( $code ), $cachedData['fallbackSequence'] );
-		foreach ( $codeSequence as $csCode ) {
-			$fileName = dirname( __FILE__ ) . "/i18n/$csCode.json";
-			if ( is_readable( $fileName ) ) {
-				$data = FormatJson::decode( file_get_contents( $fileName ), true );
-				foreach ( array_keys( $data ) as $key ) {
-					if ( $key === '' || $key[0] === '@' ) {
-						unset( $data[$key] );
-					}
-				}
-				$cachedData['messages'] = array_merge( $data, $cachedData['messages'] );
-			}
-
-			$cachedData['deps'][] = new FileDependency( $fileName );
-		}
-		return true;
-	}
-
-	$GLOBALS['wgHooks']['LocalisationCacheRecache'][] = 'wfJsonI18nShim9e08550f702d6269';
-}
diff --git a/ContributionScores.php b/ContributionScores.php
index d53b00f..47ebc67 100644
--- a/ContributionScores.php
+++ b/ContributionScores.php
@@ -1,11 +1,11 @@
 <?php
 /** \file
-* \brief Contains setup code for the Contribution Scores Extension.
-*/
+ * \brief Contains setup code for the Contribution Scores Extension.
+ */
 
 # Not a valid entry point, skip unless MEDIAWIKI is defined
 if ( !defined( 'MEDIAWIKI' ) ) {
-	echo "Contribution Scores extension";
+	echo 'Contribution Scores extension';
 	exit( 1 );
 }
 
@@ -15,32 +15,39 @@ $wgExtensionCredits['specialpage'][] = array(
 	'url' => 'https://www.mediawiki.org/wiki/Extension:Contribution_Scores',
 	'author' => 'Tim Laqua',
 	'descriptionmsg' => 'contributionscores-desc',
-	'version' => '1.17.0'
+	'version' => '1.23.0'
 );
 
-$dir = dirname( __FILE__ ) . '/';
-
 define( 'CONTRIBUTIONSCORES_MAXINCLUDELIMIT', 50 );
 $wgContribScoreReports = null;
 
 // These settings can be overridden in LocalSettings.php.
-$wgContribScoreIgnoreBlockedUsers = false; // Set to true to exclude bots from the reporting.
-$wgContribScoreIgnoreBots = false; // Set to true to exclude blocked users from the reporting.
-$wgContribScoresUseRealName = false; // Set to true to use real user names when available. Only for MediaWiki 1.19 and later.
-$wgContribScoreDisableCache = false; // Set to true to disable cache for parser function and inclusion of table.
 
-$wgAutoloadClasses['ContributionScores'] = $dir . 'ContributionScores_body.php';
+// Set to true to exclude bots from the reporting.
+$wgContribScoreIgnoreBlockedUsers = false;
+
+// Set to true to exclude blocked users from the reporting.
+$wgContribScoreIgnoreBots = false;
+
+// Set to true to use real user names when available. Only for MediaWiki 1.19 and later.
+$wgContribScoresUseRealName = false;
+
+// Set to true to disable cache for parser function and inclusion of table.
+$wgContribScoreDisableCache = false;
+
+$wgAutoloadClasses['ContributionScores'] = __DIR__ . '/ContributionScores_body.php';
 $wgSpecialPages['ContributionScores'] = 'ContributionScores';
 
 $wgMessagesDirs['ContributionScores'] = __DIR__ . '/i18n';
-$wgExtensionMessagesFiles['ContributionScores'] = $dir . 'ContributionScores.i18n.php';
-$wgExtensionMessagesFiles['ContributionScoresAlias'] = $dir . 'ContributionScores.alias.php';
-$wgExtensionMessagesFiles['ContributionScoresMagic'] = $dir . 'ContributionScores.i18n.magic.php';
+$wgExtensionMessagesFiles['ContributionScoresAlias'] = __DIR__ . '/ContributionScores.alias.php';
+$wgExtensionMessagesFiles['ContributionScoresMagic'] =
+	__DIR__ . '/ContributionScores.i18n.magic.php';
 
 $wgHooks['ParserFirstCallInit'][] = 'efContributionScores_Setup';
 
 function efContributionScores_Setup( &$parser ) {
 	$parser->setFunctionHook( 'cscore', 'efContributionScores_Render' );
+
 	return true;
 }
 
@@ -59,21 +66,20 @@ function efContributionScores_Render( &$parser, $usertext, $metric = 'score' ) {
 
 		if ( $metric == 'score' ) {
 			$res = $dbr->select( 'revision',
-									'COUNT(DISTINCT rev_page)+SQRT(COUNT(rev_id)-COUNT(DISTINCT rev_page))*2 AS wiki_rank',
-									array( 'rev_user' => $user->getID() ) );
+				'COUNT(DISTINCT rev_page)+SQRT(COUNT(rev_id)-COUNT(DISTINCT rev_page))*2 AS wiki_rank',
+				array( 'rev_user' => $user->getID() ) );
 			$row = $dbr->fetchObject( $res );
 			$output = $wgLang->formatNum( round( $row->wiki_rank, 0 ) );
 		} elseif ( $metric == 'changes' ) {
 			$res = $dbr->select( 'revision',
-									'COUNT(rev_id) AS rev_count',
-									array( 'rev_user' => $user->getID() ) );
+				'COUNT(rev_id) AS rev_count',
+				array( 'rev_user' => $user->getID() ) );
 			$row = $dbr->fetchObject( $res );
 			$output = $wgLang->formatNum( $row->rev_count );
-
 		} elseif ( $metric == 'pages' ) {
 			$res = $dbr->select( 'revision',
-									'COUNT(DISTINCT rev_page) AS page_count',
-									array( 'rev_user' => $user->getID() ) );
+				'COUNT(DISTINCT rev_page) AS page_count',
+				array( 'rev_user' => $user->getID() ) );
 			$row = $dbr->fetchObject( $res );
 			$output = $wgLang->formatNum( $row->page_count );
 		} else {
diff --git a/ContributionScores_body.php b/ContributionScores_body.php
index 36dfd06..cabc238 100644
--- a/ContributionScores_body.php
+++ b/ContributionScores_body.php
@@ -1,7 +1,7 @@
 <?php
 /** \file
-* \brief Contains code for the ContributionScores Class (extends SpecialPage).
-*/
+ * \brief Contains code for the ContributionScores Class (extends SpecialPage).
+ */
 
 /// Special page class for the Contribution Scores extension
 /**
@@ -50,12 +50,14 @@ class ContributionScores extends IncludableSpecialPage {
 		}
 
 		if ( $wgContribScoreIgnoreBlockedUsers ) {
-			$sqlWhere .= " {$nextPrefix} rev_user NOT IN (SELECT ipb_user FROM {$ipBlocksTable} WHERE ipb_user <> 0)";
+			$sqlWhere .= " {$nextPrefix} rev_user NOT IN " .
+				"(SELECT ipb_user FROM {$ipBlocksTable} WHERE ipb_user <> 0)";
 			$nextPrefix = "AND";
 		}
 
 		if ( $wgContribScoreIgnoreBots ) {
-			$sqlWhere .= " {$nextPrefix} rev_user NOT IN (SELECT ug_user FROM {$userGroupTable} WHERE ug_group='bot')";
+			$sqlWhere .= " {$nextPrefix} rev_user NOT IN " .
+				"(SELECT ug_user FROM {$userGroupTable} WHERE ug_group='bot')";
 		}
 
 		$sqlMostPages = "SELECT rev_user,
@@ -67,7 +69,7 @@ class ContributionScores extends IncludableSpecialPage {
 						 ORDER BY page_count DESC
 						 LIMIT {$limit}";
 
-		$sqlMostRevs  = "SELECT rev_user,
+		$sqlMostRevs = "SELECT rev_user,
 						 COUNT(DISTINCT rev_page) AS page_count,
 						 COUNT(rev_id) AS rev_count
 						 FROM {$revTable}
@@ -118,11 +120,16 @@ class ContributionScores extends IncludableSpecialPage {
 			}
 
 			$output .= Html::closeElement( 'tr' );
-			$output .= "<tr class='{$altrow}'>\n<td class='content' style='padding-right:10px;text-align:right;'>" .
-				$lang->formatNum( round( $user_rank, 0 ) ) . "\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
-				$lang->formatNum( round( $row->wiki_rank, 0 ) ) . "\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
-				$lang->formatNum( $row->page_count ) . "\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
-				$lang->formatNum( $row->rev_count ) . "\n</td><td class='content'>" .
+			$output .= "<tr class='{$altrow}'>\n" .
+				"<td class='content' style='padding-right:10px;text-align:right;'>" .
+				$lang->formatNum( round( $user_rank, 0 ) ) .
+				"\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
+				$lang->formatNum( round( $row->wiki_rank, 0 ) ) .
+				"\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
+				$lang->formatNum( $row->page_count ) .
+				"\n</td><td class='content' style='padding-right:10px;text-align:right;'>" .
+				$lang->formatNum( $row->rev_count ) .
+				"\n</td><td class='content'>" .
 				$userLink;
 
 			# Option to not display user tools
@@ -150,16 +157,16 @@ class ContributionScores extends IncludableSpecialPage {
 				array(
 					'style' => 'border-spacing: 0; padding: 0',
 					'class' => 'contributionscores-wrapper',
-					'lang' => htmlspecialchars( $lang->getCode()),
+					'lang' => htmlspecialchars( $lang->getCode() ),
 					'dir' => $lang->getDir()
 				),
 				"\n" .
-					"<tr>\n" .
-					"<td style='padding: 0px;'>{$title}</td>\n" .
-					"</tr>\n" .
-					"<tr>\n" .
-					"<td style='padding: 0px;'>{$output}</td>\n" .
-					"</tr>\n"
+				"<tr>\n" .
+				"<td style='padding: 0px;'>{$title}</td>\n" .
+				"</tr>\n" .
+				"<tr>\n" .
+				"<td style='padding: 0px;'>{$output}</td>\n" .
+				"</tr>\n"
 			);
 
 		return $output;
@@ -213,9 +220,17 @@ class ContributionScores extends IncludableSpecialPage {
 		} else {
 			$reportTitle = $this->msg( 'contributionscores-allrevisions' )->text();
 		}
-		$reportTitle .= " " . $this->msg( 'contributionscores-top' )->numParams( $limit )->text();
-		$title = Xml::element( 'h4', array( 'class' => 'contributionscores-title' ), $reportTitle ) . "\n";
-		$this->getOutput()->addHTML( $this->genContributionScoreTable( $days, $limit, $title, $options ) );
+		$reportTitle .= ' ' . $this->msg( 'contributionscores-top' )->numParams( $limit )->text();
+		$title = Xml::element( 'h4',
+				array( 'class' => 'contributionscores-title' ),
+				$reportTitle
+			) . "\n";
+		$this->getOutput()->addHTML( $this->genContributionScoreTable(
+			$days,
+			$limit,
+			$title,
+			$options
+		) );
 	}
 
 	/**
@@ -242,8 +257,11 @@ class ContributionScores extends IncludableSpecialPage {
 			} else {
 				$reportTitle = $this->msg( 'contributionscores-allrevisions' )->text();
 			}
-			$reportTitle .= " " . $this->msg( 'contributionscores-top' )->numParams( $revs )->text();
-			$title = Xml::element( 'h2', array( 'class' => 'contributionscores-title' ), $reportTitle ) . "\n";
+			$reportTitle .= ' ' . $this->msg( 'contributionscores-top' )->numParams( $revs )->text();
+			$title = Xml::element( 'h2',
+					array( 'class' => 'contributionscores-title' ),
+					$reportTitle
+				) . "\n";
 			$out->addHTML( $title );
 			$out->addHTML( $this->genContributionScoreTable( $days, $revs ) );
 		}
diff --git a/Gruntfile.js b/Gruntfile.js
new file mode 100644
index 0000000..1c93271
--- /dev/null
+++ b/Gruntfile.js
@@ -0,0 +1,26 @@
+/*jshint node:true */
+module.exports = function ( grunt ) {
+	grunt.loadNpmTasks( 'grunt-contrib-jshint' );
+	grunt.loadNpmTasks( 'grunt-banana-checker' );
+	grunt.loadNpmTasks( 'grunt-jsonlint' );
+
+	grunt.initConfig( {
+		jshint: {
+			all: [
+				'*.js'
+			]
+		},
+		banana: {
+			all: 'i18n/'
+		},
+		jsonlint: {
+			all: [
+				'**/*.json',
+				'!node_modules/**'
+			]
+		}
+	} );
+
+	grunt.registerTask( 'test', [ 'jshint', 'jsonlint', 'banana' ] );
+	grunt.registerTask( 'default', 'test' );
+};
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..4365e8a
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,12 @@
+{
+	"require-dev": {
+		"jakub-onderka/php-parallel-lint": "0.9",
+		"mediawiki/mediawiki-codesniffer": "0.4.0"
+	},
+	"scripts": {
+		"test": [
+			"parallel-lint . --exclude vendor",
+			"phpcs -p -s"
+		]
+	}
+}
diff --git a/i18n/en.json b/i18n/en.json
index d9357e3..6e58f9b 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -1,18 +1,18 @@
 {
-    "@metadata": {
-        "authors": []
-    },
-    "contributionscores": "Contribution scores",
-    "contributionscores-desc": "Polls the wiki database for highest [[Special:ContributionScores|user contribution volume]]",
-    "contributionscores-info": "The score primarily measures unique pages edited, with consideration for high edit volume.",
-    "contributionscores-top": "(Top $1)",
-    "contributionscores-days": "Last {{PLURAL:$1|day|$1 days}}",
-    "contributionscores-allrevisions": "All time",
-    "contributionscores-score": "Score",
-    "contributionscores-rank": "Rank",
-    "contributionscores-pages": "Pages",
-    "contributionscores-changes": "Changes",
-    "contributionscores-username": "Username",
-    "contributionscores-invalidusername": "Invalid username",
-    "contributionscores-invalidmetric": "Invalid metric"
+	"@metadata": {
+		"authors": []
+	},
+	"contributionscores": "Contribution scores",
+	"contributionscores-desc": "Polls the wiki database for highest [[Special:ContributionScores|user contribution volume]]",
+	"contributionscores-info": "The score primarily measures unique pages edited, with consideration for high edit volume.",
+	"contributionscores-top": "(Top $1)",
+	"contributionscores-days": "Last {{PLURAL:$1|day|$1 days}}",
+	"contributionscores-allrevisions": "All time",
+	"contributionscores-score": "Score",
+	"contributionscores-rank": "Rank",
+	"contributionscores-pages": "Pages",
+	"contributionscores-changes": "Changes",
+	"contributionscores-username": "Username",
+	"contributionscores-invalidusername": "Invalid username",
+	"contributionscores-invalidmetric": "Invalid metric"
 }
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..094b8ea
--- /dev/null
+++ b/package.json
@@ -0,0 +1,13 @@
+{
+  "private": true,
+  "scripts": {
+    "test": "grunt test"
+  },
+  "devDependencies": {
+    "grunt": "0.4.5",
+    "grunt-cli": "0.1.13",
+    "grunt-contrib-jshint": "0.11.3",
+    "grunt-banana-checker": "0.2.2",
+    "grunt-jsonlint": "1.0.4"
+  }
+}
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 0000000..d81a292
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<ruleset>
+	<rule ref="vendor/mediawiki/mediawiki-codesniffer/MediaWiki"/>
+	<file>.</file>
+	<arg name="extensions" value="php,php5,inc"/>
+	<arg name="encoding" value="utf8"/>
+	<exclude-pattern>vendor</exclude-pattern>
+</ruleset>