fixes #8471 - adds a number field input support

* change subnet vlan to number field
* change ldap port to number field
Fixes #8536 - can update and delete media with dot in name
Fixes #8284 - missing params in OS api docs
fixes #8348 - expose user variable to templates in group mail
fixes #8221 - search for subnet with taxonomy scope
fixes #8526 - file uploads are now possible via two_pane.

NOTE this will probably only work with HTML5 based browsers.
fixes #8513 - removing n+1 query from images#index
Fixes #8546 - Namespace interfaces and subnets to avoid a facts clash
fixes #8539 - refactoring a test to work for both GNU libc and Darwin libc
Merge remote branch 'origin/develop' into develop