Re-enable v1.0 URI compatibility wrt update feeds.

The additional filter token introduced 404's for bookmarked feeds;
now the old URLs are re-added and their actions forward the requests
to the new handlers.
Another small change removes a double assignment and puts the
"All Updates" link in the template on top to separate it clearly
from the other filters.

This commit closes issue 605.

src/IDF/templates/idf/project/timeline.html

@@ -13,9 +13,12 @@
 {/block}
 
 {block context}
+<p><span class="label{if 'all' == $model_filter} active{/if}"><a href="{url 'IDF_Views_Project::timeline', array($project.shortname, 'all')}">{trans 'All Updates'}</a></span></p>
 <p><strong>{trans 'Filter by type'}</strong><br />
 {foreach $all_model_filters as $filter_key => $filter_name}
+{if $filter_key != 'all'}
 <span class="label{if $filter_key == $model_filter} active{/if}"><a href="{url 'IDF_Views_Project::timeline', array($project.shortname, $filter_key)}">{$filter_name}</a></span><br />
+{/if}
 {/foreach}
 </p>
 {/block}