New document version improvements from clients/bc

- Comment field help text.
- Remove create_document_form_form.
- Use static NewVersionForm.
- Update sources document upload and new version upload view names.

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

mayan/apps/sources/links.py

@@ -117,7 +117,7 @@ link_document_version_upload = Link(
     args='resolved_object.pk', condition=document_new_version_not_blocked,
     icon_class_path='mayan.apps.sources.icons.icon_document_version_upload',
     permissions=(permission_document_new_version,),
-    text=_('Upload new version'), view='sources:upload_version',
+    text=_('Upload new version'), view='sources:document_version_upload',
 )
 link_setup_source_logs = Link(
     args=('resolved_object.pk',),