Dev fix: Add `renderer` as an initialisation parameter

- The core logic was already present, it just wasn't in the defaults or
  available to be set in the init object
Update jQuery UI styling references

- The jQueryUI option is depricated in 1.10 and will be removed in 1.11
  to be replaced by style integration files int he same way that
  Bootstrap and Foundation use. This helps to reduce the size of the
  core for a feature that is no longer used that often, while also
  ensureing that DataTables remains modular and supports many styling
  libraries.

- As a result of this change, I want developers to be able to implement
  1.10 without needing to use a depricated option, so this highlights
  the newly added jQuery styling integration files from the plug-ins
  repo.