EPEDEV-356

EPEDEV-356 - Move pub/share/feature code to WP

Moving to DB instead of WP as these features relate to how things are
managed within the Resource DB.

1. Moved epe_cm_form_alter() and callback_for_cancel_button() from
epe_cm/epe_cm.module to epe_db/epe_db.module and renamed to
epe_db_form_alter()
2. Moved epe_cm_permission() from from epe_cm/epe_cm.module to
epe_db/epe_db.module and renamed to epe_db_permission()
3. Moved the following node/node%/* menu items from epe_cm_menu() in
epe_cm/epe_cm.module to epe_db_menu() in epe_db/epe_db.module:
deleteresource, submitpublic, unsubmitpublic, approvepublic,
rejectpublic, feature, unfeature, share, and unshare
4. Moved epe_cm.page.inc from epe_cm to epe_db and renamed to
epe_db.pages.inc. Also, updated all the function names to reflect new
module.