Fix for "Create and Add" button to pick up active sub class
Merge pull request #863 from lopsided/master

Fix for "Create and add another" button when using inherited classes
Fix xhtml <link> tag closure.
Fix empty error bug.
Merge pull request #866 from Romain-Geissler/fix-xml-html

Fix xhtml <link> tag closure.
Merge pull request #867 from Romain-Geissler/fix-empty-error-bug

Fix empty error bug.
Used the elements variable inside the show action template, instead of using admin.show.
Added getName() for form types where they were missing
Corrected form extension calls with the latest symfony master changes and fixed broken tests
User the groups variable and not the admin_pool.dashboardGroups to iterate over dashboard groups
Fix download label/prompt showing when no export formats are configured
Fixed a few more bits to do with symfony form extension calls
Merge pull request #1 from benlumley/fix-form-extension-calls

Fixed a few more bits to do with symfony form extension calls
Fixed broken tests
Added optional preview mode for editing and creating entities
Added missing files for the preview and the refactored edit_form views
Removed publicly accessible method for supportsPreviewMode and made the variable public instead
Refactored duplicate code into protected methods within the CRUDController
Twig CS fix
Re-indented preview block and added missing whitespace to comply with the twig CS.