Merge pull request #240 from chchwy/master

Remove binary and unused files.
actually enable translation support (and build .ts file at build-time)
add a lots of tr()
add italian translation, update translations and pencil.pro
update Italian translation
add other tr()s, now the interface should be fully-translatable. refreshed translation files. Italian translation completed
another string. Update translations
remove an alien 's' from src/interface/editor.cpp added by mistake
Merge pull request #242 from mapreri/translations

fully-translatable interface. Italian translation.
Minor
Merge branch 'master' into feature/object-save-loader

Conflicts:
	pencil.ts
	src/interface/displayoptiondockwidget.cpp
	src/interface/editor.cpp
	src/interface/mainwindow2.cpp
	src/interface/tooloptiondockwidget.cpp
	src/main.cpp
	src/structure/layersound.cpp