Added tooltip to the TokenInput

@mgamba @ciniglio 

Added image location for an icon to the TokenInput.
Added hover handling for tooltip.
Added location for jquery tooltip.

https://github.com/Adaptly/adaptly-bone/pull/778
generally in coffeescript, we use `@` to denote `this`, and then coffeescript does the heavy lifting of converting `@` to `this` and copying `this` to `_that` or however they deal with scope issues