Revert "Fixed I54 with cleaning some code"

This reverts commit 5d15ec3c02adeb435c6e619d3ae8e4dc78e09310.
Changed structure of integration tests
Added Undo-button test with scaling & moving
Added fix for moving/scaling after undo
Deleted unnecessary parameter in BitmapIntegrationTest.java
Added RedoIntegrationTest
Updated structure of integration tests
Added utf-8 encoding in eclipse preferences for filename tests
Commented underspecified test case which should be refactored with File I/O
Merge branch 'master' into I54_Bitmap_not_centered_after_undo
Merge branch 'master' into I54_Bitmap_not_centered_after_undo
Fixed bug
Merge branch 'master' into I54_Bitmap_not_centered_after_undo
Merge branch 'master' into I54_Bitmap_not_centered_after_undo

Conflicts:
	Paintroid/src/org/catrobat/paintroid/ui/implementation/DrawingSurfaceImplementation.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/BitmapIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/CropToolIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/overflow/FullscreenIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/tools/CropToolIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/junit/command/BitmapCommandTest.java
Merge branch 'I54_Bitmap_not_centered_after_undo' into Refactor_Remove_Activities

Conflicts:
	PaintroidTest/src/org/catrobat/paintroid/test/integration/DisableButtonsTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/FullscreenIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/HideToolbarIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/StressIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/overflow/FullscreenIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/statusbar/SwitchToolIntegrationTest.java
	PaintroidTest/src/org/catrobat/paintroid/test/integration/tools/CropToolIntegrationTest.java