fix compile error in resource repository element interface
Merge pull request #154 from JarekW/dev

fix compile error in resource repository element interface
Datagrid option 'admin_edit_element_id' generates action that points to route 'fsi_admin_form' instead of 'fsi_admin_crud_edit'
Added 'element_id' option to every action in datagrid
Removed 'admin_element_edit_id' and 'admin_element_display_id' options from action column in favor of 'element_id' in each action
Renamed batch action option 'element_id' to 'element'
Added DisplayElement feature
Changed datagrid-bundle dependency to ~1.1
Removed useless code, updated docs
Updated batch element docs
Extracted DataIndexerElement interface
Introduced GenericDeleteElement for clearer method naming
ResourceRepository\Element now extends Admin\ElementInterface
Controllers now require interfaces instead of abstract classes
Display\Element now extends Admin\ElementInterface
Added missing DisplayControllerSpec
Added route_name and additional_parameters options to BatchActionExtension
Redirect old fsi_admin_crud_* routes to new fsi_admin_*
Reorganized templates