Alter the paths so it does not conflict with a couchdb install

[ryanramage]

As a lot of initial users will come from the couchdb community, the paths for the garden app should be different from the original couchdb install. That way it will be a fresh couch, with no conflicting settings.

[ryanramage]

Here is the source where it needs to be altered:

https://github.com/garden20/garden-for-osx/blob/master/Couchbase%20Server/Couchbase_ServerAppDelegate.m#L200