Merge commit '6096eec67e01d3546f5ed28501e6f65be27c8b48' as 'PurpleStub'
http://redmine.artifacts.de/issues/2119 - check if download is possible (connected to network) and call failblock if not
Merge commit '156ce183f5ac1f69c5e17f62809deab59f562404' into subtree

Conflicts:
	PurpleStub/AFCache/AFCache.xcodeproj/project.pbxproj
	PurpleStub/AFCache/AFCache.xcodeproj/xcuserdata/mic.xcuserdatad/xcschemes/xcschememanagement.plist
	PurpleStub/AFCache/src/shared/AFCache.m
	PurpleStub/AFCache/src/shared/AFCacheableItem.m
removed personal settings