[ticket/12169] Convert user_from to profile field location

Missing changes on memberlist view due to missing functionality

PHPBB3-12169
[ticket/12180] Add "Each file MUST end with exactly one newline character" rule

PHPBB3-12180
[ticket/12169] Allow displaying profile fields on memberlist

We can not sort by profile field values atm. And also I'm not sure
whether this is possible at all.

PHPBB3-12169
[ticket/12169] Add new option to display profile fields on memberlist

PHPBB3-12169
[ticket/12169] Split mode==headline into it's own function

PHPBB3-12169
Merge pull request #2010 from nickvergessen/ticket/12169

Ticket/12169  Convert location user field to profile field
Merge remote-tracking branch 'bantu/ticket/12180' into develop

* bantu/ticket/12180:
  [ticket/12180] Add "Each file MUST end with exactly one newline character" rule