Moved About and Settings to overflow menu

Huge thanks go out to atermenji who wrote this code during his
participation in the Google Summer of Code 2012. Due to internal
decisions this could only be adopted now.
Added new strings, deleted old ones.

Removed the English and German strings that are supposedly used in
MainMenuActivty, but weren't from what I can see. Then added the new
ones with a prefix 'main_menu_'.

Removed now obsolete icons, replaced them with <shape> drawables. To be
found in /res/drawable. They are all the same but already have the
correct names, so once the icons arrive, they can be just dropped in.
Drawable cleanup. Color cleanup. Now in grey/white

* Deleted old drawables that are not used anymore in the new design.
* Removed website_blue, replaced with 'white'.
* Styles adopted to white/grey.
Removed last traces of old MainMenu strings.

Commented out the old MainMenuActivity strings in all remaining
languages to find all old occurances and adapted those.
Adopted more tests to the new layout
Added missing license texts
Conflicts in strings.xml resolved
Prevent screen orientation change in Main Menu.

Forced MainMenuActivity to be in portrait mode only by modifying the
AndroidMainifest.xml (android:screenOrientation="portrait"). Then went
on to remove all tests that tried an orientation change.
Added test to assert that Main Menu is in portrait

Since Robotium can force the activity to be in landscape mode, no matter
the settings in the manifest (they can later be overridden), this test
first asserts that we're indeed in portrait mode and secondly tests if
the setting in AndroidManifest.xml was set to portrait.
Removed 'Start' button from MainMenu. Deleted test

* Removed the 'Start' button from the Actionbar in MainMenuActivity and
removed it from the menu_main.xml file.
* Deleted a test that started the stage from a landscape Main Menu.
There is no landscape mode anymore for this activity, thus the test was
deleted.

Committing so I can run a test on Jenkins to find all occurances where
'Start' is pressed.
Adopted tests to missing Start button in MainMenu.

Since MainMenuActivity doesn't have a Start Button anymore, tests need a
different entry point.

Commented out a whole test because all asserts were commented out
anyway. Few of these around, we'll have to look at them later. Added
TODO
Drawable cleanup. MDPI and LDPI deleted.

Deleted mdpi and ldpi drawables. None of these will be used anymore and
this will make further cleanup easier when we change other activities.
Title is now set to app_name, not project name

Removed all setTitle() calls except the one in onResume() which I
adapted to set the Actionbar title to the application name.
Tests fixed and removed after 'Start' was removed.

* Tests that unnecessarily tested orientation change (in MainMenuActivity)
removed if they don't test anything else or adopted if they test
something else too.
* Some tests looked at the Actionbar title to check if a project was
loaded. With the removal of the project title form the actionbar
(app_name is now shown in Main Menu) a different approach was necessary.
Fixed tests that I accidently broke
Refactored method calls, moved method in MainMenu

Refactored getActivity().getString() to solo.getString(), supposedly,
this is the correct way to do it with Robotium.

Moved actionBar.setTitle() from onResume() to onCreate().
Deleted tests that have been unused out for a year

git blame showed that these were commented out for over a year. During
the acceptance of the redesign of the MainMenuActivity, we decided to
delete them.
Renamed variables, removed abbrevations
Merged with master
Refactored test in an attempt to escape OOM Error

While unable to find our memory leak on orientation change so far, I
adopted some tests that were especially prone to leak memory, leading to
OOM errors. Of course this is not a real solution but a workaround. I'll
keep on digging in the Heap and Allocation analysis tools to find it.

Even if we, in the upcoming release, lock Catroid to portrait mode, it
would be better to detect the leak anyway.