initial checking of Troubleshoot module, from SUMO addon.

mythmon's https://addons.mozilla.org/en-US/firefox/addon/troubleshooter/#id=426841 addon,
similar to the `about:support`  page info.
lib/Troubleshoot.js; renamed, modified to match sdk conventions
state-events:  prefs, was whitelist, now blacklist
global-state initial bulked up

* bookmark count
* login table (password reuse)
* about:support troubleshooting info
expose TOPIC from utils
require('all-actions') will now pull in all actions
main reflects addition of all-actions.js
ensure that on 'disable' data is cleared.  Proxy for uninstall

NOTE: can't directly check for

* https://bugzilla.mozilla.org/show_bug.cgi?id=627432#c12
Better addon naming, description
windows: tabcount, toolbars, toolbar customizations