Fixed problem with new repos, and visibility on the main list.

rhodecode/model/scm.py

@@ -112,7 +112,7 b' class CachedRepoList(object):'
                 continue
 
 
-            if not scmr:
+            if scmr is None:
                 log.error('%s this repository is present in database but it '
                           'cannot be created as an scm instance',
                           dbr.repo_name)