build trees in separate div (maybe tab later)
browse media from local and media manager
style for media manager
update method doc
modification to display a readable path
add a media source configuration
use configurable media sources
make path works with local
build trees in separate div (maybe tab later)
browse media from local and media manager
style for media manager
Merge branch 'develop' into media-manager

Conflicts:
	views/js/ui/resourcemgr.js
	views/js/ui/resourcemgr/fileBrowser.js
Merge pull request #66 from oat-sa/media-manager

Media manager