[DF-185] Small ui fixes
[DF-185] added new icons - key plus/minus
[DF-185] Fixed bug, when recent opened scenes were missing. Some icons changed
[DF-874] Added special propertydata for keyedarchive
Merge branch 'development' of https://github.com/dava/dava.framework into development

Conflicts:
	Tools/ResourceEditor/ResourceEditorQtVS2010.vcxproj