Adds custom wp_query parameters to post_type fields.
Adds "multiple" field type.
Treats multiple field type as an array.
Lots of changes implementing multiple fields.
Merge branch 'master' of git://github.com/memuller/wp_atlas

* 'master' of git://github.com/memuller/wp_atlas: (32 commits)
  Adds a function to limit chars/words.
  Allows custom conditionals on asset inclusion.
  Implements multiple conditionals on script includes.
  Displays all posts (instead of last 5) on post_type selectors.
  Filters post_row actions.
  Properly versions media custom field button.
  Fixes media fields preview handling.
  Adds preview to media fields.
  Adds first() method helper.
  Adds is => singular conditional script include tag.
  Bugfixes some strange stuff with WP_Roles.
  Bugfixes form handling @CustomUser.
  Includes JS/CSS scripts for Profile pages, if needed.
  Runs build_database for CustomUser only if not a default role.
  Adds 'any' as a valid resource inclusion criteria.
  Fixes style handling.
  Adds a 'first' method to CustomPost to query for a single item.
  Handles custom_field selectors on all().
  Runs build_database on custom models only if they have it.
  Enqueues media scripts when needed.
  ...

Conflicts:
	views/admin/fields/media.php
	views/admin/fields/post_type.php