multifield 7.x-1.0-alpha1

Changes since 7.x-1.0-unstable9:

• Disable the admin/structure/multifield/add form now that it is a deprecated workflow.
• Merge branch '2234769-multifield-field-type' into 7.x-1.x
• Missing ctools_include() call before calling export function in multifield_cache_clear().
• Added very basic features integration.
• Added 'multifield' field type. The old field types are now deprecated.
• Fixed multifield_item_serialize() should assign column default if not set. Added test coverage for it.
• Added multifield_items_extract_ids().
• Only show the actions elements if there are visible action buttons.
• #2309473 by Dave Reid: Copy Field Collection module's 'hide_blank_items' field option.
• #2217667 by Dave Reid, Mixologic: Fixed multifield_field_widget_form missing invocation of hook_field_attach_form() for compatibility with Field Group module.
• Added multifield_extract_multifield_machine_name() instead of hard-coding use of $field['type'].
• Remove exportable API information.
• #2213719: Speedup item_to_entity() and entity_to_item() by removing field_info_instances() call.
• Removed and cleaned up unnecessary code in multifield_field_load().
• Added tests for the Devel Generate integration.
• Removed deprecated file in multifield.info.
• #2198697: Fixed errors if a default value is used with a multifield.
• Make the Entity Translation test case a little more strict.
• Hide the 'Remove' button from default value widgets. Also ensure an ID value is never assigned to default values.
• Added Entity Translation test.