#492: media entities updated to handle history.
#492: media API context updated to skip history records.
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#492: file re-upload implemented for html5.
#492: file re-upload implemented for browsers that do not support html5.
Update README.md
#493: initial version of media history reviewer.
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
#493: fixed media re-upload.
#493: media history viewer updated.
#493: sorting fixed on media history table.
#493: PublishedOn added to media.
#493: download functionality added to media history dialog.
#493: added folder view reload after history close.
#494: sub-folders added.
Page Not Found issue fixed in the CmsController.
Merge branch 'master' into dev
Merge branch 'dev' into dev-webapi

Conflicts:
	Modules/BetterCms.Module.MediaManager/BetterCms.Module.MediaManager.csproj