Merge pull request #153 from Catrobat/development_andi

Development andi
Merge branch 'master' of github.com:Catrobat/Catty
Merge pull request #158 from Catrobat/development

Development
Merge pull request #159 from Catrobat/development

Development
Merge pull request #167 from Catrobat/development

Development
moved NSData+Hashes to correct folder
import: no square images any more
Merge branch 'development_marc' into development
Merge branch 'development_marc' into development
FileManager+ statusBar activity
wrong title in LooksTVC
fixes #184
synchronized fix
Merge pull request #186 from Catrobat/development_marc

Development marc
stop sound when changing to show/hide details
Merge pull request #187 from Catrobat/issue#184

Issue#184
stop played sound on scene segue
Merge branch 'development' of gh:Catrobat/Catty into issue#184

* 'development' of gh:Catrobat/Catty:
  FileManager+ statusBar activity
  fixes #173
  some usability improvements for download progress
  fixes #180
  import: no square images any more
  moved NSData+Hashes to correct folder
  started working on search bar issue
  fixes #174, #178, #179
  fixes #172
  fixes #181
  removed warnings
  fixes search bar issue (not translucent)
  fixes background+loadingActivity
Merge branch 'master' of gh:Catrobat/Catty into development

* 'master' of gh:Catrobat/Catty:
  fileManger + statusBar activity
fix wrong icon bug when scrolling