Don't check for the static/ext/ directory in DEBUG mode.
Review Request #5668 — Created April 1, 2014 and submitted
When running in DEBUG mode, the manual update checks were checking for
htdocs/static/ext/, but adding this would cause problems, since we don't
want a htdocs/static/ in a dev install.We now only make this check if not running in DEBUG mode.
I was able to get back into my dev server.
