List repositories via API should not be affected by disabled repositories

A disabled repository should not affect api calls to list repositories.

The disabled git repository is a customer's environment was throwing errors such as

Repository REPONMAE on http://HOST:8060/ failed: repository not in correct state: Repository is stopped 

in JIRA when viewing "All" activity in JIRA or when viewing a JIRA project which is not associated with a Fisheye repository (and hence searches all repositories).