Fix commit's time

- Use the Committer's `when` as the CommitDate will be modified when the
commit is being moved around in the git tree(e.g. being rebased on top
of newer commits). The Author's `when` is created once and never touched
again.

Author: Gusted

templates/repo/view_list.tmpl

@@ -34,7 +34,7 @@
 					</span>
 				{{end}}
 			</th>
-			<th class="text grey right age">{{if .LatestCommit}}{{if .LatestCommit.Author}}{{TimeSince .LatestCommit.Author.When $.Lang}}{{end}}{{end}}</th>
+			<th class="text grey right age">{{if .LatestCommit}}{{if .LatestCommit.Author}}{{TimeSince .LatestCommit.Committer.When $.Lang}}{{end}}{{end}}</th>
 		</tr>
 	</thead>
 	<tbody>