Drop "-pro" suffix and "editpro" URIs for EditEngine in Maniphest
Summary: Ref T9908. Move all the "pro" stuff into the old locations.
Test Plan: Created/edited tasks, looked at URIs, saw non-pro ones. Grepped for editpro.
Reviewed By: chad
Maniphest Tasks: T9908
Differential Revision: https://secure.phabricator.com/D14717