Order timeline filters alphabetically by label

[Ryan J Ollos]

The timeline filters seems to have a random ordering, determined by order in which the extensions points are discovered. It would be nice to have a predictable ordering and it seems logical to order alphabetically by label.

[Ryan J Ollos]

Proposed changes:

trac/timeline/templates/timeline.html

@@ -32 +32 @@
         <label>by author <input type="text" size="16" name="authors" value="$authors" /></label>
        </div>
        <fieldset>
-        <label py:for="filter in filters">
+        <label py:for="filter in sorted(filters, key=lambda d: d['label'])">
           <input type="checkbox" name="${filter.name}"
                  checked="${filter.enabled or None}"/> ${filter.label}
         </label>

[Jun Omae]

The patch would break position of repositories in the filters. In addition, I don't think it would be good to CJK users.