Merge pull request #890 from sharetribe/fix-bug-reject

Fix bug: template missing when rejecting transaction
Add deleted flag to People
Delete user information and add flag
Error page 410 gone
Add deleted to listing
Delete listing
Don't search listings that are deleted
Display name view util
Person entity display name

- Pass only first name and last name from entity
- Add PersonViewUtils.person_entity_display_name
- Take display name into use in Admin transactions view
- Take display name into use in free conversations
Show removed user in inbox
Show display_name in preauthorize action
Transaction view and message view shows "Removed user"
Copy texts and translations
Copy for multimembership delete
Use new delete methods in PeopleController, no ongoing transactions
Show removed user in testimonials and comments
Remove link to listing in admin transaction view
No link to listing from inbox
Remove link from transaction to listing
Ignore user's deleted listings