GUI: completly remove facility "type" property.

- Removed get/setType() from Facility object.
- Do not send type as parameter when creating Facility.
- Removed type from facility tables and tab headers.
- Removed type from breadcrumbs and listboxes.
GUI: do not display facilities statistics by type

- Remove facilities statistics from perun admin - Statistics tab
  since facility type is to be removed.
GUI: allow to edit facility name