add possibility to check code with checkstyle

- checkstyle config file is located in catroid/ project
- projects use this config file (project relative - local)
- project checkstyle config (location of checkstyle config,
excludes,...) located in .checkstyle project file
- projects can be checked with rightclick-checkstyle-check Code...
robotium update to 4.3.1-SNAPSHOT and fix tests
Merge pull request #716 from Catrobat/checkstylePlayground

successfully tested
Merge pull request #726 from Catrobat/updateRobotium

robotium update to 4.3.1-SNAPSHOT and fix tests
Move more tests to the Emulator
Merge pull request #729 from Catrobat/RefactorUITests

Refactor more testcases to run on the Emulator rather than on the Device
increased versionName in Manifests
increased versionCode to 10
Merge pull request #731 from Catrobat/updateTo0.9.3

Increase versionName/Code in Manifests to 0.9.3/10
Fix Delete Projects
Add test for Delete many Projects
Add "select all"
make buttons chlickbale in Action mods
add margin to select all option
add layout xml for select all
add select all to ScriptFragment
Merge pull request #650 from Catrobat/issue#632

fix issue#632, issue#413 and issue#434
 Remove unnecessary calls to getString()
Merge pull request #734 from Catrobat/remove_getstring

 Remove unnecessary calls to getString()
Remove duplicate code, cleanup when possible

* Settings menu moved to BaseActivity
* Moved strings around where necessary
* Adapted tests
* Various little refactorings
Merge pull request #732 from Catrobat/when_im_bored_i_delete_stuff

Remove duplicate code, cleanup when possible
remove TODO and reintegrate assert

this one is working since async saving of programs
is disabled at the top of the test!!
Merge pull request #736 from Catrobat/fixTestSetDescription

Fix #646