Merge pull request #666 from dvvrd/robots

QReal:Robots 2.2.0
removed old Nullsoft Installer scripts and irrelevant stuff
- modularized installer with separate component descriptions
- added option to remove entire QRealRobots folder
- remove registry settings after deinstallation
- whether to include NXT Tools is now selectable from command line during installer build, see buildRobots.bat for an example
unattended installer mode
- removed old installer for QReal with NXT Tools
- updated standalone NXT Tools installer
encoding fixed
added installation of qt-sdk to travis config, in hope that it will fix builder
added some weird linux stuff
Added 2D model and sensors configuration saving into repo
Merge branch 'installer' of github.com:qreal/qreal into 2dModelIntoRepo
Merge branch 'travis' of github.com:qreal/qreal into 2dModelIntoRepo
Fixed sensor position reinitting wth its type modification;
Restored scene updating on mouse events
Merge pull request #669 from qreal/installer

Installer
Merge pull request #671 from dvvrd/2dModelIntoRepo

2D world model storing
Version incremented
Added world model and sensor configuration into examples;
Some bugfixes