Added an EventFragment

MenuFragment now reuses main fragments
Added setCameraPosition method to map fragment
Moved main fragment switching to MainActivity
Testing camera position save
Saving camera position onStop
Now saving map camera position on rotation
Fixed calendar code indentation
Removed some unnecessary calendar functionality
Updating EventFragment

Working on a "Show on map" button
implemented onBackPressed in MainActivity so it goes back to
	the previous fragment from EventFragment
Changed currentFragment to currentFragmentId
Merge branch 'mntnorv-dev' into dev

Conflicts:
	res/layout/event_layout.xml
	src/lt/socialheat/android/MainActivity.java
Implemented back button navigation

Also refactored MainActivity a bit - methods are now grouped by
categories (mainly by their superclass) and easier to find.
Fixed a bug with up button navigation
Added calendar_day layout
Changed how event and list fragments get data
Added DayView class.

For displaying additional information on the calendar
Merge branch 'dev' into mntnorv-dev

Conflicts:
	src/lt/socialheat/android/EventFragment.java
Added EventLoader interface.

Now the main fragments get events through the
setEvents(List<SocialEvent>) method in this interface
Displaying event count in calendar.

Very unoptimized for now
Attempted to fix map camera

failed horribly
More attemps at fixing camera

more failures, but it worked once