initial commit to emailer system overhaul
emailer invocation for new users
Merge remote-tracking branch 'origin/master' into email-revamp

Conflicts:
	package.json
fixed debug output when plugin method is not found
implemented emailer for welcome email (though the email confirmation system is horribly broken)
Merge remote-tracking branch 'origin/master' into email-revamp
fixing 'back to nodebb' ext, and revamping email confirm logic
Merge branch 'master' into email-revamp
Merge remote-tracking branch 'origin/master' into email-revamp
tweaks to emailer, implemented emailer hook for password reset