Drop in_place_edit references in sessions controller.
Switch long/short Session.to_s.
Refactor session lists.
Major rewrite of session editing.
Make .no-well CSS work in another .well.
Drop in_place_edit declarations in service items controller.
Drop unused service_records views.
Fix application/new.js.
Restyle Treatment view.
Simplify .to_s for TariffItemGroup.
Rewrite tariff item group editing.
Add tariff item group entry to navigation.