returned openFirstDiagram() for QReal:Robots. Metamodeling on fly can be crashing again, proper fix needed.
Merge pull request #1236 from qreal/openFirstDiagram-robots

returned openFirstDiagram() for QReal:Robots. Metamodeling on fly can be...
add UXInfo to NodeElement and EdgeElement
Merge branch 'master' of https://github.com/qreal/qreal into userActions