Dev: Remove use of `getRootNode()` its a new method that don't appear to work well across browsers.
Dev: Remove use of `getRootNode()` its a new method that don't appear to
work well across browsers.

- Using two different methods now - check that the node is in the body
  using a little jQuery
- And that there are actually rows in the table

StevenLiekens/KeyTable,StevenLiekens/KeyTable