Revert Add template name to hook_theme() since it is not needed.
Rename inc file to theme.inc. Add template name to hook_theme().
Correcting two settings types.
Issue #2666598 by Sam152: Fix failing test in HEAD
Issue #2645160 by neerajskydiver: Caption is not working with 'Title text' and 'Alt text' properties from the file entity contrib module
Issue #2649886 by frjo, snsblvd: Content image style for first image is not working
Issue #2648424 by emanuelrighetto, Sam152: FieldFormatter
Issue #2642514 by Sam152: Create a basic integration test to ensure the colorbox library is loaded
Issue #2646540 by Sam152: Change PageAttachmentInterface to ElementAttachmentInterface
Issue #2646530 by Sam152: Remove the ColorboxAttachment::alreadyAdded flag
Issue #2646512 by Sam152: Inject the request stack into ActivationCheck
Issue #2646518 by Sam152: Inject the attachment service into the colorbox field formatter
Issue #2646510 by Sam152: Remove the irrelevant services injected into colorbox.activation_check
Readd some of the activation code.
Remove settings to activate/deactivate Colorbox on specific pages since we now automatically activate it when the formatter is used.
Move code to attache the Colorboc JS and CSS from hook_page_attachments() to viewElements() in the Colorbox field formatter.
Sync up with how cores ImageFormatter is coded.
Issue #2642382 by Sam152: Replace range options in the admin from with a more compact form
Issue #2642496 by Sam152: Remove trailing whitespace from default configuration
Issue #2642156 by Sam152: Move the logic contained within hook_page_attachments to an AttachmentManager service
Issue #2642150 by Sam152: Store enabled paths as a string with newlines instead of an array
Issue #2642142 by Sam152: Move the _colorbox_active check into a service
Issue #2642152 by Sam152: Remove any left over Drupal 7 code
Issue #2642146 by Sam152: Default disabled paths should begin with a leading forward slash
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