Remove obsolete code

As well as some format and comment improvements.

libgitg/resources/diff-view-html-builder.js

@@ -171,7 +171,6 @@ function diff_files(files, lines, maxlines, data)
 
 	var repl = [
 		'FILEPATH',
-		'GUTTER_DOTS',
 		'TABLE_BODY',
 		'STATS'
 	];

libgitg/resources/diff-view.html

@@ -19,7 +19,7 @@
         <div class="sha1"></div>
       </div>
 
-      <!-- Hunk template -->
+      <!-- Diff template -->
       <div class="file">
         <table class="contents">
           <colgroup>

libgitg/resources/diff-view.js

@@ -25,7 +25,7 @@ var settings = {
 		stage: 'stage',
 		unstage: 'unstage',
 		loading_diff: 'Loading diff...'
-	}
+	},
 };
 
 if ('settings' in params)