Feat/SW-1719 strikethrough rates
* feat(SW-1719): Strikethrough rate if logged in on regular rate cards
* feat(SW-1719): Strikethrough rate if logged in on rate summary
* feat(SW-1719): Strikethrough rate if logged in on mobile rate summary
* feat(SW-1719): Strikethrough rate if logged in on enter details
* feat(SW-1719): Strikethrough rate support for multiple rooms
* feat(SW-1719): booking receipt fixes on confirmation page
* feat(SW-1719): improve initial total price calculation
* feat: harmonize enter details total price to use one and the same function
Approved-by: Michael Zetterberg