initial commit

Very rough and full of clutter in some places and glaring holes in
others, but it's a start!
SendToAdminHeader: creator field

Un-hide the dc:creator field
"Related Sources", Simple Pages mobile view

Added "Related Sources" (mapped to dc:relation) to item entry form,
displayed on items/show.php (desktop view only). Added mobile view to
Simple Pages templates.
Oops
Revert "Oops"

This reverts commit 1b3c437acd30f6eddc54474f525a03a9754f12a6.
Updated to Omeka 2 (?)

I've got a question out to Erin Bell to determine what the purpose of
the SendToAdmin plugin was supposed to do... it may be that they have
an updated version of the plugin that I'm not able to see.
COMPLETED: Upgrade for Omeka 2.0
Version bump
Omeka 2.x compatibility
History rectification
Removed subdirectory