Sort extensions list for improved manageability

The extensions list is already somewhat long, and will be getting
longer as missing extensions from our config are identified and
added. Sort the entries in alphanumeric ASCII ordering to simplify
further insertions.

Change-Id: I9333f99a23bd3304722bf6363c2a0719a5e20711

manifests/init.pp

@@ -86,25 +86,25 @@ class mediawiki(
 
     mediawiki::extension {
       [
-        'OpenID',
-        'CodeEditor',
-        'Scribunto',
-        'CategoryTree',
-        'cldr',
-        'Babel',
-        'Translate',
-        'Collection',
         'AntiSpoof',
+        'Babel',
+        'CategoryTree',
+        'CirrusSearch',
+        'CodeEditor',
+        'Collection',
+        'Echo',
+        'Elastica',
         'Mantle',
         'MobileFrontend',
-        'SubPageList3',
+        'OpenID',
         'ReplaceText',
-        'googleAnalytics',
-        'Echo',
+        'Scribunto',
+        'SmiteSpam',
+        'SubPageList3',
+        'Translate',
         'UniversalLanguageSelector',
-        'Elastica',
-        'CirrusSearch',
-        'SmiteSpam'
+        'cldr',
+        'googleAnalytics',
       ]:
     }