ui: changed calls for edit caches to use repo id instead of a name for safer calls to repos which paths have special characters

rhodecode/templates/admin/repos/repo_edit_caches.mako

@@ -10,7 +10,7
             ${_('Cache purge can be automated by such api call. Can be called periodically in crontab etc.')}
             <br/>
             <code>
-            ${h.api_call_example(method='invalidate_cache', args={"repoid": c.rhodecode_db_repo.repo_name})}
+            ${h.api_call_example(method='invalidate_cache', args={"repoid": c.rhodecode_db_repo.repo_id})}
             </code>
         </p>