Update help db with regex instructions for allow and disallow site, fix a bug in regex for these urls too, a=chris

Author	Chris Pollett <chris@pollett.org>
Author date	2020-08-02 01:Aug:nd
Author local date	2020-08-01 18:Aug:st -0700
Committer	Chris Pollett <chris@pollett.org>
Committer date	2020-08-02 01:Aug:nd
Committer local date	2020-08-01 18:Aug:st -0700
Commit	d6bb2df603d5647dc3da3d89f7c66b53ee1a6518
Tree	478a6c66aaee89118de3753f7295b14f6d963d44
Parent	a3cfd7f71ac370500e03382897a756b1a14d393e

Update help db with regex instructions for allow and disallow site, fix a bug in regex for these urls too, a=chris

Affected files:
src/controllers/Controller.php
src/data/public_default.db