downloads: add links to gitlab and github

Author: davvid

downloads.html

@@ -41,15 +41,19 @@ <h2 class="title">
 
 <li>
 <a href="{{ site.cola_archive }}/v{{ site.cola_version }}.tar.gz">
-    git-cola v{{ site.cola_version }}</a> (latest stable release)
+    Git Cola v{{ site.cola_version }}</a> (latest stable release)
 </li>
 <li>
-<a href="{{ site.cola_github }}">
-    Git Cola's git repository</a>
+<a href="{{ site.cola_github }}/releases">
+    All Releases</a>
 </li>
 <li>
-<a href="{{ site.cola_github }}/releases">
-    Fresh git-cola releases hot off the presses</a>
+<a href="https://gitlab.com/git-cola/git-cola/-/tags">
+    Sources (gitlab)</a>
+</li>
+<li>
+<a href="https://github.com/git-cola/git-cola/tags">
+    Sources (github)</a>
 </li>
 </ul>