Architecture for multiple constructors support.
commented out constructor specifics from main plugin interfaces
Merge branch 'master' of https://github.com/qreal/qreal into trikSupportStage2

Conflicts:
	plugins/robots/robotsInterpreter/robotSettingsPage.cpp
	plugins/robots/robotsInterpreter/robotsPlugin.cpp
translation added
compiled out unsupported blocks, enabled TRIK by default
support for "beep" and "engines stop"
build fixed
fixed mad painter for unresizable elements in QReal:Robots
Merge branch 'trikSupport-demo-25-07' of https://github.com/qreal/qreal into trikSupport-demo-25-07
fix for crash in saving
enabled "beep" and "engines stop" blocks, some last-minute fixes
- final node generation added
- new example (Around Corner) added
new example - moving along the line
"Stop robot" button
Metamodel and metaeditor extended with explosions entities
Added explosion binding to robots subprogram
Connections replaced with explosions in models
Removed old connections/usages mechanism;
Some of its parts replaced with explosion links
Some fixes caused aseertation faults
Small refactoring: something migrated into view/private