Merge pull request #734 from dvvrd/robots

Critical fixes
Merge pull request #737 from dvvrd/robots

QReal:Robots 2.3.0
Fixed #743
Fixed #712
Fixed #719
Fixed #720
Fixed #698
Fixed #718
Fixed #475
Fixed #740
Fixed #688
Fixed #744 and #745
Partially fixed #727
Fixed #725
Fixed #724
Fixed #703
Fixed #724, #754
Modifications in start dialog and create diagram/project promts
Fixed #520
Merge pull request #748 from dvvrd/fix698

Fixed #698