Fixed segfault on division by zero in expression parser
Added element deletion from scene by strike-out gesture
Implemented cutting on diagrams
Added port hints into 2D model sensors to distinguish them
2D model port hints made visible only by hover
Added touch-optimized mode settings
Added on-screen keyboard showing when focusing some editor in touch mode
Merge pull request #1234 from dvvrd/robots

Some usability features for RoboFest