Revise Bugzilla module comments into extension help.
Revise the comments detailing module usage at the start of the Bugzilla
extension into extension help text.
Expand the detail given on extension settings, in an attempt to permit
the user to configure successfully without having to study the extension
code. Show a sample configuration as well.
notify: no charset conversion when testing
Same as for patchbomb.
Make "test" a notifier attribute so we don't have to check
the boolean over and over.
issue1419: catch strange readline import error on windows