Add support for the 'alphabeticalByName' type for the 'getalbumlist' method

Reference [Issue #166](https://github.com/ampache-doped/ampache/issues/166)

This doesn't implement the offset for pagination yet, but this is along the lines of what I'm thinking for an implementation. This is working with my HTC One on Android 4.4 and the latest version of Ultrasonic to load a list of all albums (or at least the first 20) when selected.

Let me know your thoughts and I'll add them along with the offset implementation for a final pull request.