Fix button widths on formula editor keyboard and add regression test

add regression test for button widths on formula editor keyboard

fix button widths in formula editor keyboard

Add assertion error message for FormulaEditorKeyboardTest/testLayout

Change FormulaEditorKeyboardTest/testLayout: all weights in a row have to add up to 1

fix number type in assertEquals

get views dynamically

remove comments
Merge pull request #904 from StefanTischler/master

#668 fix formula editor button widths and add regression test
improve SourceTest
use StringBuilder where possible
made RegEx faster
Merge pull request #935 from Catrobat/improvedSourceTests

improve SourceTests
removed japanese strings
Merge pull request #947 from Catrobat/no_japan_strings

remove japanese translation
Check for x86 CPU and don't load native libs
added one brick but buggy
Merge branch 'drone2' of https://github.com/Catrobat/Catroid into drone2
Battery Status changed
Merge branch 'master' into drone2-merge-master

Conflicts:
	catroidSourceTest/src/org/catrobat/catroid/test/code/CheckForAssertionsTest.java
	catroidSourceTest/src/org/catrobat/catroid/test/code/StringsTest.java
fixed classpath & print StackTrace with Log.e fct.
Merge branch 'drone2' into drone2-merge-master
moved files from Catroid to catroid
Merge branch 'drone2' into drone2-merge-master
removed 5.1 robotium
Merge branch 'drone2' into drone2-merge-master
dont create >My First drone Project< on startup
fixed PMDWarnings.

fixed md5 checksum error.
test required resources from bricks