Fixed return types of Listener and Resource preferences
Format some code
Implement switching branch method
Merge branch 'master' of git://github.com/perconik/perconik

Conflicts:
	com.gratex.perconik.tag/META-INF/MANIFEST.MF
	sk.stuba.fiit.perconik.eclipse/src/sk/stuba/fiit/perconik/eclipse/jgit/lib/GitRepositories.java
Removed duplicate method declaration
Merge branch 'master' of git://github.com/perconik/perconik
Implement git log command for the file from repository
Implement checkout file method, changed order methods
Merge pull request #3 from feromakovi/master

Implement git log command for the file from repository