admin - enhancements to errors/debug

Changed throwGmessage default messaging and color. will no longer be red
UNLESS it's an API failure. Will help to diagnose what's causing the
error.
Added URL into message.
turned off some debug
set a app.var for debug val for quick app lookup which means debug can
be a specific value and debug output can be specific within a function
(if app.vars.debug == 'init') for instance.