add ux information collection (1)
some styleguide changers
fixed conflict with startDialog
Merge branch 'master' of https://github.com/qreal/qreal into uxInfo

Conflicts:
	plugins/robots/nxtGenerator/nxtGenerator_ru.ts
	plugins/robots/robotsInterpreter/robotsInterpreter_ru.ts
	qrutils/qrutils.pri
small fix
added check if write failed
comments added
revert robots ts files
fixed kernel tests
after review changers (1)
Merge branch 'master' of https://github.com/qreal/qreal into uxInfo
after review changes (2)
Merge branch 'uxInfo' of https://github.com/qreal/qreal

Conflicts:
	qrgui/dialogs/preferencesPages/behaviourPage.cpp
	qrgui/mainwindow/mainWindow.cpp
	qrgui/qrgui_ru.qm
	qrgui/qrgui_ru.ts
	qrkernel/settingsDefaultValues
minor styleguide fixes