Mtg: No UI dialogs from Utils.parseHtmlError
Mtg: No UI dialogs from Utils.parseHtmlError

Removes duplicate error notes, some controllers do that themselves.
Also allows silent error handling.

ahjo-dashboard/dashboard-ui,evidentti/dashboard-ui,tkenakka/dashboard-ui,evidentti/dashboard-ui,tkenakka/dashboard-ui,ahjo-dashboard/dashboard-ui