Allow local.properties to be placed in ~/.gerritcodereview

The local.properties file must currently be placed in the root of the
gerrit project.  If the project is removed or untracked files are
removed, the settings are lost.

Add support for keeping the file in the `.gerritcodereview` folder in
the user's home folder.

If the file exists in both the gerrit root and `~/.gerritcodereview`,
the one in the root takes precedence.

Change-Id: I815637cf47e84d29c33afa8aafa562d6915f5326
2 files changed