Export and import were added
Settings from console string
Set settings from the console string
Some changes
with break
Merge branch 'master' of https://github.com/qreal/qreal into feature

Conflicts:
	qrgui/dialogs/preferencesDialog.ui
Buttons Import and Export
Merge branch 'feature' of https://github.com/IrinaShkviro/qreal
minor fixes
added translation