lightbox2 6.x-1.4

Changes since DRUPAL-6--1-3:

• #216078 - modified views image grouping so it groups by the name of the field. Patch provided by kosmoscentral.
• #217372 - fix for default trigger size
• #212460 - fixed rtl support
• #217808 - inline images now use the anchor href attribute rather than the image src attribute when displaying the image in the lightbox.
• #217069 (part 1) - prevent lightbox2 hanging when destination image doesn't exist. It now displays a image not found type image.
• #217069 (part 2) - added in ability to check for original images when the designated display size for an image node isn't found. If it can't find the original then it will default to brokenimage.jpg.
• #221363 - allow users to have their own custom trigger sizes
• Removed support for deprecated theme('add_style', ...) function calls.
• #219376 - added a "zoom out" or "contract" button to return a zoomed in image to the smaller scaled down size.
• #221809 - blocks containing images, created by the image and flickr modules, are now grouped according to their block id when image grouping is enabled.
• Added in a change to ensure the child element has a class before we try to access it.
• Fixed API documentation.
• Updated help text.
• Updated language translation template.