remove footer

* as discussed with Usability team, the clickable footer view has to be removed from all lists
* remove clickable footer from bricklist
refactoring of BrickDragAndDropTest

* adapted checks with adapter.getCount - no footer any more
* testPutHoveringBrickDown now working - adapted index to drag the correct brick (heights changed recently and click was performed on the wrong brick)
* remove goBackToHome
* changed purpose of testclickOnEmptySpace - footer is gone, so nothing should happen
refactoring of MoveBrickAcrossScriptTest

* remove goBackToHome from tearDown()
* use longClickAndDrag from UiTestUtils
* remove comments
* assert adapter now working
refactoring of ScriptDeleteTest

* remove goBackToHome from tearDown()
* adapt indices of script childcount (footerview removed from adapter)
refactoring of brick tests

clickable footerview was removed, and tests with adapter had to be adapted in order to pass without the view
Quick fix to make broadcast bricks work again

Broadcasts working again, but there seem to be deeper-running issues
with the XML parser, see the issue's discussion for details.
refactoring of MainMenuActivity

* reorder methods
* remove unused constructs (stage is not started from MainMenu any more)
* project is only loaded once (in onResume())
* some other refactoring
refactor MessageContainer
Merge branch 'master' into issue#105

Conflicts:
	catroid/src/org/catrobat/catroid/content/bricks/BroadcastBrick.java
	catroid/src/org/catrobat/catroid/content/bricks/BroadcastReceiverBrick.java
	catroid/src/org/catrobat/catroid/content/bricks/BroadcastWaitBrick.java
Fix failing test after BroadCast fix
Null out MessageContainer when calling .clear()

The instance of messageAdapter was retained over different projects, thus, the
"Nothing…" string was missing in the Spinner.
Shut down BT connection when returning to MainMenu

This is a dirty quickfix, an issue will be created to look into this more closely.
Fix two more test classes
Add regression test for Issue #105 + minor changes

* Added a bit more logic to NewProjectDialog
* Replaced hardcoded version codes with something more readable
rename "costume" into "look"
 * variables and filenames
rename checkboxes
add divider for look items
rename styles
 * from "sound"-styles to "fragment"-styles
 * more general
refactor layout of look list items
 * according to design mockup
rename string to fit for costumes
 * more general