Sanitise new lines and carriage returns in Evernote formatting
Remove flashes

Flashes can't work with our caching setup.
Fix sitemap config

Replace helper method and prioritize features.
Scope uniqueness of identifier

Resource is always created via evernote_note request.
Validate uniqueness of related note
Skip comments when settings say so
Fix sign up and sign in

Redirect all events to one page, ensure any new web accounts are added
to current user, show flashes conditionally, reload user menu.