[Android] URBNG-354

Created empty Fragments for Login and Register.
Created ViewPager for above fragments.
Merge pull request #49 from KamilLelonek/android

[Android] URBNG-354
Merged with [URBNG-274] Add logout functionality. Some fixes added.
Merged with [URBNG-274] Add logout functionality. Some fixes added.
Merged with URBNG-208: Created games list adapter
Merge branch 'android' of github.com:lucdom/UrbanGame into android_URBNG-360

Conflicts:
	UrbanGame/AndroidManifest.xml
	UrbanGame/src/com/blstream/urbangame/LoggingInActivity.java
	UrbanGame/src/com/blstream/urbangame/MainActivity.java