Adds dealer registration page as its own URL

Adds dealer_registration.html template to replace using
"form.html?badge_type=2"
Explicitly tell dealers if dealer reg is closed.

More clearly explains to attendees if dealer reg is closed or just not
yet open. Fixes #595
Added LARP

added to interest, job_interest, job_location in
development-defaults.ini
Fixes #619
Adds support for anthrocon_plugin

Updates the vagrant install file to pull down anthrocon_plugin from
GitHub and add it as a plugin. It will alternatively use a local copy if
you have it cloned inside your ubersystem/ folder.
Revert "Adds support for anthrocon_plugin"

This reverts commit 4395b14f4d1201104a4e53a1bc82f158aa1e54a2.
Update select2 library to 3.5.1
Convert pre-reg to Bootstrap
Remove preregistration/badge_choice from default reg flow
More pre-reg Bootstrap conversion
Merge pull request #625 from magfest/prereg-bootstrap

Prereg bootstrap