Fix title of Confirm Bid route
Fix title of Confirm Bid route

Problem

* Title was previously "Auction Registration"

Solution

* Name the page "Confirm Bid | Artsy"
  + consistent with naming convection of other pages
  + there isn't a title for the Force-backed page
    - [example page][0] (must be registered for sale to see the page
render)

Related Jira: https://artsyproduct.atlassian.net/browse/AUCT-667

[0]: https://staging.artsy.net/auction/shared-live-mocktion/bid/john-l-doyle-clown?bid=190000

artsy/reaction,artsy/reaction,artsy/reaction-force,xtina-starr/reaction,xtina-starr/reaction,artsy/reaction-force,xtina-starr/reaction,artsy/reaction,xtina-starr/reaction