Documents: Split monolith forms.py

Split the documents/forms.py into sub modules for each logical
unit: types, document, pages, versions.

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/documents/views/misc_views.py

@@ -10,6 +10,8 @@ from mayan.apps.common.generics import ConfirmView
 from ..permissions import permission_document_tools
 from ..tasks import task_clear_image_cache, task_scan_duplicates_all
 
+
+__all__ = ('ClearImageCacheView', 'ScanDuplicatedDocuments')
 logger = logging.getLogger(__name__)