Added datetime picker and updated graphs page to use it.

Added a new bootstrap plugin for support datetime picking. One was already used and included before hand but it wasn't working. Added this plugin to scrutinizer config to exclude.

Removed some remains from the piecharts - these cause issues with certain javascript libraries. I've removed them in the dynamic config pr as well but they caused issues here as well so assuming this gets merged first I'll update the dynamic config pr.

Update graphs page to use this new datetime picker and also updated form to use bootstrap.