fixes #1951 - support for libvirt named networks

based on Dominic initial pull request 308
fixes #2590 - bookmarks modal form is now working
fixes #2599 - Bulk-selectable environments & puppet classes import

Makes the Env/Classes import a bit safer by first of all defaulting all the
checkboxes to be unchecked. Also adds multiple toggle links to selectively
realize All/New/Changed/Obsolete puppet modules.
Less repeating of words: Check all/all - refs #2599