[Android] Created flow between My Games and All Games

Completed subtask:
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https://tracker.blstreamgroup.com/jira/browse/URBNG-446

Description:
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**Logged** user is now available to switch activities between ```MyGames``` and ```ActiveGames``` using spinner menu in application bar.
**Not logged** user can browse games and log in using special icon on apllication bar.

Implementation details:
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Created one more, top level, activity called ```AbstractGameListActivity``` which is overriding ```AbstractMenuActivity```. It allows to switch between different kind of list games with spinner placed in application bar.
I also split menu icons into separate ```xml``` files to easier manage them.