* Switch getTags to return a frequency map
* Removed old tag cloud library because it has been [archived and is not available](https://code.google.com/archive/p/visapi-gadgets/)
* Switched to [jQCloud](http://mistic100.github.io/jQCloud/) and vendored in the CSS and JS
* Add type-ahead suggestion for tag search box and tag edit page
Change-Id: I69b00b107d531f744c1a96cd986dee34fb3dfe06
Steve Armstrong