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
Fix datepicker
Fix birthdate check

Moves up the birthdate check to ensure that a default/invalid birthdate
is caught BEFORE it's used.
Check for future birthdates

The system can't find an age_group for future birthdates, so it fails
rather unpleasantly. This adds a check to prevent an invalid date from
getting that far.
Merge pull request #626 from magfest/prereg-bootstrap

Fix datepicker
Merge pull request #631 from magfest/prereg-bootstrap

Fix datepicker
Fixes birthdate errors

Fixes some errors based on birthdate formatting, adds an age_group_desc
property to attendees for use in validation messages, and changes the
label for birthdate fields.
Fix postal code checks to include 5-4 values

There's no reason for us not to accept both 5-digit and 9-digit
zipcodes, so ubersystem now allows both.
Compress zipcode validation

Improves readability for the zipcode regexp-based validation.
Fix data type of birthdate

Changes the birthdate so it's ALWAYS a Date object, and compares it to
another Date object instead of a Datetime object.
Fix date vs datetime calculations

The last commit broke some stuff in models.py, this fixes it. Makes the
code more readable, too.