Added a method to support a dependent custom field.
Merge branch 'develop' of git://github.com/daylightstudio/FUEL-CMS into develop

# By David McReynolds
# Via David McReynolds
* 'develop' of git://github.com/daylightstudio/FUEL-CMS: (29 commits)
  fixed links in user guide troubleshooting area
  added check for has_auto_increment to the list view
  fix for wretched login issue where your password would change
  Fix for submit button key value when set to non ascii
  Fix for issue #258 regarding automatically hiding key_fields even when not auto incremented
  Additionally logging added to help uncover mysterious login issue of people not able to login anymore
  Removed updating of password in session value upon updating
  Fixes for asset field type when selecting more the one image to upload from modal window
  fix for issue asset field type when uploading multiple images
  added is_post_processing and is_pre_processing flags in Form_builder
  Added fix for when a module is disabled it doesn't load in the interface
  Increased width of error area on login page to prevent issues with icon sprite
  Fixed issue with upload path not working correctly when multiple files are being uploaded from a module
  google_helper fixes to include universal analytics
  updated installation schema to use InnoDB as the storage engine and fixed issue with fuel_navigation unique key index when location values are the same value
  changed MySQL storage engine to InnoDB
  fix for file field type and repeatable fields not uploading to the correct folder after adding additional repeatable fields
  fixed issue where PDF previews would show a broken image when selecting them in the asset selector
  Added is_hidden and set_hidden methods to the base Fuel_layouts class
  updated icon in basic documentation
  ...

Conflicts:
	fuel/modules/fuel/libraries/Fuel_custom_fields.php
Added before_label & after_label to Form Builder.
Merge pull request #253 from specialbrand/develop

Added a method to support a dependent custom field.