Select by table cell hover, not checkbox hover

MR welcome! :)

Thanks @euk, nice one! :) That's something I wanted to do for years :D

Left a comment. Afterwards we should get feedback, if it works well. Could you explain the changes, especially clickToToggle: false a bit?

Could you explain the changes, especially clickToToggle: false a bit?

The changes are inspired by the libraries readme page, which is quite small and doesn't provide much info. In the nutshell, first of all, the plugin is applied to table cells and not the checkboxes directly. This calls for using the callbacks as follows:
- onChange: to color the cells based on the status of the containing checkbox,
- getChecked: to read checkbox status
- setChecked: to find and mark the checkbox as per provided state

As for the clickToToggle - the documentation doesn't have much info, but setting it to FALSE seems to help the whole thing.