fixes #98 protection against float division of percentage stats

rhodecode/controllers/admin/repos.py

@@ -285,7 +285,7 b' class ReposController(BaseController):'
 
         c.repo_last_rev = r.revisions[-1] if r.revisions else 0
 
-        if last_rev == 0:
+        if last_rev == 0 or c.repo_last_rev == 0:
             c.stats_percentage = 0
         else:
             c.stats_percentage = '%.2f' % ((float((last_rev)) /