Tweaked cache key when getting localizer from basName/location:

[DamianEdwards]

• Cleaned up code a little to make it easier to understand (maybe)
• Resource name is incorrect when not setting Options.ResourcesPath #138

@ryanbrandenburg @rynowak

[rynowak]

- seems simple enough. Should we have a test that we can retrieve the same one twice (with/without the resource name set)?

[DamianEdwards]

Sounds like a good ide, will add a test.

[ryanbrandenburg]

simple cleanup it seems to me.