fix logic bug in trivial-validate when rule fails XML validate
make trivial-validate support --quiet (no warnings, only failures)
new rule-validating precommit hook from jpds/master
trivial-validate --quiet; also, it can exit 3, not just 1
Merging Lisa Yao's GSoC 2013 code for ruleset tests into main repo
Made ruleset tests menu item only appear if about:config pref is set
Preliminary ruleset test instructions, and made it so menu item only appears once
Ruleset tests write output to log box
Ruleset tests output is prettier