New DAS exception module; move Wildcard exception over there
New DAS template to handle wildcard errors
Move Wildcard exception from das_query module; fix all long lines
Remove HtmlString class which allow to by-pass template sanitization
Re-factor code which handle Wildcard exceptions on web UI; add code to pass suggested options to new das_wildcard_err template; remove obsolete code reported by pylint test
Merge branch 'issue3962'