Initialize add-on toolbar last clicked timestamp to now
Initialize add-on toolbar last clicked timestamp to now

Fixes #1170

6a68/testpilot,clouserw/testpilot,6a68/testpilot,lmorchard/testpilot,fzzzy/testpilot,dannycoates/testpilot,lmorchard/testpilot,lmorchard/idea-town,lmorchard/testpilot,lmorchard/idea-town-server,mathjazz/testpilot,meandavejustice/testpilot,flodolo/testpilot,lmorchard/idea-town-server,mathjazz/testpilot,ckprice/testpilot,lmorchard/testpilot,mozilla/idea-town-server,meandavejustice/testpilot,mozilla/idea-town-server,clouserw/testpilot,dannycoates/testpilot,meandavejustice/testpilot,lmorchard/idea-town,mathjazz/testpilot,meandavejustice/testpilot,fzzzy/testpilot,mozilla/testpilot,mozilla/testpilot,ckprice/testpilot,6a68/testpilot,flodolo/testpilot,clouserw/testpilot,chuckharmston/testpilot,ckprice/testpilot,mozilla/idea-town,6a68/idea-town,mathjazz/testpilot,chuckharmston/testpilot,chuckharmston/testpilot,flodolo/testpilot,mozilla/testpilot,chuckharmston/testpilot,fzzzy/testpilot,dannycoates/testpilot,ckprice/testpilot,fzzzy/testpilot,flodolo/testpilot,mozilla/idea-town-server,lmorchard/idea-town,dannycoates/testpilot,6a68/idea-town,mozilla/testpilot,lmorchard/idea-town-server,mozilla/idea-town,mozilla/idea-town,6a68/idea-town,6a68/idea-town,6a68/testpilot,mozilla/idea-town-server,lmorchard/idea-town-server,lmorchard/idea-town,clouserw/testpilot,mozilla/idea-town