Fix #91: Ensure mediawiki.skinning.content module is loadable

In MW 1.33 the ResourceLoaderRegisterModules hook is called before
the standard MW module definitions are loaded from Resources.php.
It is therefore not possible to work with these module definitions
from inside the hook.

It is in particular not possible to register a module
0.mediawiki.skinning.content based on the module
mediawiki.skinning.content.

Instead of registering 0.mediawiki.skinning.content to enforce the
correct loading order for modules a module zzz.ext.bootstrap.styles
is registered.

docs/release-notes.md

@@ -10,6 +10,7 @@ Changes:
 Fixes:
 * ([#87](https://github.com/cmln/chameleon/issues/87)) Show formedit button on the navbar
 * ([#89](https://github.com/cmln/chameleon/issues/89)) Show default icon for unknown page tools on the navbar
+* ([#91](https://github.com/cmln/chameleon/issues/91)) Ensure mediawiki.skinning.content module is loadable
 
 
 ### Chameleon 2.0

src/Chameleon.php

@@ -89,7 +89,7 @@ public static function init() {
 		// FIXME: Put this in a proper class, so it can be tested
 		$GLOBALS[ 'wgHooks' ][ 'ResourceLoaderRegisterModules' ][ ] = function( ResourceLoader $rl ) {
 
-			$rl->register( '0.mediawiki.skinning.content', $rl->getModule( 'mediawiki.skinning.content' ) );
+			$rl->register( 'zzz.ext.bootstrap.styles', $rl->getModule( 'ext.bootstrap.styles' ) );
 
 		};
 
@@ -117,8 +117,8 @@ public function getDefaultModules() {
 				unset( $modules[ 'styles' ][ 'core' ][ $modulePos ] ); // we have our own version of these styles
 			}
 
-			$modules[ 'styles' ][ 'content' ][] = '0.mediawiki.skinning.content';
-			$modules[ 'styles' ][ 'content' ][] = 'ext.bootstrap.styles';
+			$modules[ 'styles' ][ 'content' ][] = 'mediawiki.skinning.content';
+			$modules[ 'styles' ][ 'content' ][] = 'zzz.ext.bootstrap.styles';
 
 		}
 
@@ -140,9 +140,9 @@ public function setupSkinUserCss( OutputPage $out ) {
 		if ( $this->stylesHaveBeenProcessed === false ) {
 
 			$moduleStyles = [
-				'0.mediawiki.skinning.content',
+				'mediawiki.skinning.content',
 				'mediawiki.legacy.commonPrint',
-				'ext.bootstrap.styles'
+				'zzz.ext.bootstrap.styles'
 			];
 
 			if ( $out->isSyndicated() ) {