Fix getUrl to return the UrlGenerator

All of the File urls should come from UrlGenerator.
Fix the anchor link to use the revision

Fix the anchor link to use the revision for the row it's currently
processing. This just means that we need to request the revision with
it's timestamp.
Add the wrappers for the $wgEnableVignette flag

Add the wrappers for the $wgEnableVignette feature flag.