Settings on robotSettingsPage and in robotsPlugin are equal
fix issue #556
Some changes for work of robotSettings
I was wrong before but now it's working.
#876
Plagins return.
Changed comparing id of the items.
Improved check for connectivity.
Merge pull request #919 from Esenin/#556

fix issue #556
removed unneeded slot
Merge branch 'master' of github.com:qreal/qreal into settings
translations
Merge branch 'master' of github.com:qreal/qreal into advancedLinkers

Conflicts:
	qrgui/view/editorViewScene.h
Merge branch 'master' of https://github.com/qreal/qreal into editorPluginTestTool

Conflicts:
	qrgui/view/editorViewScene.cpp