Remove extraneous spaces from title when using Mingle.findCardByName

Mingle appears to remove extra spaces from a string when creating a card
title, which can cause problems when later searching Mingle for an
existing card (to prevent dupes). For instance, if you create a card in
Mingle with the title:
'[Bug 50136] Cannot edit my  vector.css user page', Mingle will change
it to: '[Bug 50136] Cannot edit my vector.css user page' on creation.

This patchset adds functionality to Mingle.findCardByName() to remove
extra spaces to ensure we prevent dupes do this 'feature' in Mingle.