Big rewrite of album add form.
- squashed 2 routes (albums/form_add and albums/create) to one (albums/add).
- made it work for ajax as well as non-ajax
- used new ORM-saving Formo driver.
Fix bugs with item_url routing in bootstrap - we can now find non-root items.
Update Formo - make Formo::load() work for non-namespaced forms with groups.
Turn off Formo namespacing.  This makes input fields easier to reference in js.
Formatting fix - get rid of stray tab in recent commit.