clean up bootstrap navbar a bit
added a bunch of function descriptions and doctests
only get DDRLocalCollection status if there's a .git directory
use the correct classname for instantiation
mv get_repos_orgs() from storage.decorators to webui.__init__

Seems like it might fit in ddrlocal too, oh well.
rm unused media path functions from storage

These were causing confusion abotu which paths were which.
function for indicating target of MEDIA_BASE symlink, if any
Merge branch 'master' into 068-backup

Conflicts:
	ddrlocal/storage/decorators.py
active device indicator form on storage-index page

This commit adds another form to the storage-index page, which
indicates which removable device, if any.
The actual mechanism really should live at the ddr-cmdln level.