Completed URBNG-357, URBNG-358, URBNG-359
Converted Activities to MenuActivities

Now it is simpler to add "moreover" menu to activity. It's just enough
to override MenuActivity insted of other kind of activity and we get
extra expandable menu in the left corner of ActionBar.
URBNG-409 bug fixed

Now it's possible to log in.
Login and Register managament added

Fixed problems revealed during pull request discussion.
Fixed NPE in SearchView in ActionBar

Added "ordedInCategory" attribute in top_bar_menu_more.xml to place it
every time on the very end of ActionBar (top, right corner) no matter
when it's added.
merged upstream/android
-
Revert "-"

This reverts commit 494a1404dd17f1dff8bc26e225f84e7e9b85f122.
merged upstream/android

Problems with GIT.
Created NotificationManager Interface

Created Interface for NotificationManager to provide users easy access
to manage notifications.
Created factory for building notifications

Created NotificationFactory class which builds notifications used in
other parts of Application.
Created NotificationManager implementation

NotificationManager is now created and it can be used to manage
(display) notifications in Application.
Added tests to notifications

More tests are necessary to test android UI, but they need more research
to do them.
Configured build path.
Merge remote-tracking branch 'upstream/android' into android

Conflicts:
	UrbanGame/src/com/blstream/urbangame/GamesListActivity.java
NotificationManager finished

Implemented complete NotificationManager to display both Pop-up and
AppliationBar notifications about changes connected with task and games.
git merge upstream/android
Fixes based on GitHub discussions remarks.
Test updates

Fetched from upstream.
NotificationsManager fixes.

Recognition wheter application is in background is now improved using
ApplicationObject.