Removed minimised sidebar.

Remove the functionality to minimise the sidebar.

As discussed with Rick this is not under a feature flag as it will be part of the release later this week.

Includes:
- Removed the minimized view, template and CSS
- Removed the takeover functionality.
- Remove full width machine view
- Fixed a bug where if you visited an unknown url the sidebar would not display (so now '/minimized' displays the sidebar)