[DF-5221] Add signal code
[DF-2218] Added setting to move elements in tree with Shift key
revert ImageMagick to ImageMagick-6.7.4
revert projects to ImageMagick-6.7.4
Merge branch 'development' of https://github.com/dava/dava.framework into development
Merge pull request #271 from abaradulkin/development

DF-291 removed unused files
Merge branch 're_stable' into development
Merge branch 'development' of https://github.com/dava/dava.framework into development
DF-185 fixed small memory leak
Merge branch 'development' of github.com:dava/dava.framework into development
[DF-5230] Improved material editor filters
Merge branch 'development' of https://github.com/dava/dava.framework into development
[DF-4902] Added RenderManager::init() to properly initialize gl
Merge branch 'development' of https://github.com/dava/dava.framework into development
Merge branch 'development' of https://github.com/dava/dava.framework into development
DF-291 Fix script removing