Clickover plugin not compatible with bootstrap 3

The [clickover](https://github.com/lecar-red/bootstrapx-clickover) plugin has not been updated in a year and is not compatible with bootstrap 3. (See, e.g. #3424)
This is causing us to rebind every time we open the popover and can result in the following things:

![screen shot 2014-08-06 at 15 29 50](https://cloud.githubusercontent.com/assets/109850/3828273/5206001a-1d76-11e4-861d-a3118860630c.png)

This function should probably just be the `share` function with the bind somewhere during widget initialization.