Make sure batch preview page shows correct link colour

First of all reset the article id of $Title after an upload.
Secondly use knownLink just to be safe in the face of slave lag.

Previously it was showing the list of uploaded images as red links.

Change-Id: Ib61162d9d035ec7d2b07d71852b1f5ea18c145fb
Merge "Make sure batch preview page shows correct link colour"