- version updated to 2.5.1
- added deassociation for file extension
Added some functionality for the new start tab
Modifications saved before leaving
Merge branch 'master' of github.com:qreal/qreal into startTab
Implemented styled button hover behaviour
Redisignment for start tab interface
Restored reading styles from resources
Increased empty space after "Recent projects" header on start tab
Merge pull request #1188 from dvvrd/startTab

Start tab redesign
Merge branch '2.5.1' of https://github.com/qreal/qreal
Styleguide fixes for start tab
Merge pull request #1189 from dvvrd/startTab

Styleguide fixes for start tab
Modified changelog: added 2.5.1 description
Merge branch '2.5.1' of https://github.com/qreal/qreal
minor changelog fixes
Merge branch 'master' of https://github.com/qreal/qreal
Merge branch 'master' of https://github.com/qreal/qreal into trikDemos

Conflicts:
	plugins/robots/robotsInterpreter/customizer.cpp