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
error message for program upload changed to error message from the server.
- notification changed if a upload fails
- test added for offensive language.
fixed PMDWarnings.

fixed md5 checksum error.
Merge pull request #950 from Catrobat/PMDWarningsPart9

fixed PMDWarnings.
issue#813 Added new testcase, fixed bug
Merge pull request #945 from Catrobat/issue#813

issue#813 Added new testcase, fixed bug
Refactor Bluetooth connection
Refactor the bluetooth socket connection.
The code to establish a socket is not trivial. It should be easy to
reuse it for future projects (Albert, Arduino..)
pmd warnings fixed.
pmd warnings fixed and time performance for robotium added.
pmd warnings fixed.
Merge pull request #939 from Catrobat/bt_refactoring_step_1

Refactor Bluetooth connection
Merge pull request #955 from Catrobat/PMDWarningsPart5

pmd warnings fixed
Merge pull request #956 from Catrobat/PMDWarningsPart11

Pmd warnings fixed
Improved SourceTests, again
Merge pull request #948 from Catrobat/sourceTestIssues

Improved SourceTests, again