[ticket/13193] Add link to post count in PMs

PHPBB3-13193
[ticket/13193] Add load_search config check

PHPBB3-13193
[ticket/13193] Make template more readable

PHPBB3-13193
[ticket/13193] Swap ternary condition members

PHPBB3-13193
Merge pull request #3054 from Senky/ticket/13193

[ticket/13193] Post count in PMs not a link

* Senky/ticket/13193:
  [ticket/13193] Swap ternary condition members
  [ticket/13193] Make template more readable
  [ticket/13193] Add load_search config check
  [ticket/13193] Add link to post count in PMs
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/13193] Swap ternary condition members
  [ticket/13193] Make template more readable
  [ticket/13193] Add load_search config check
  [ticket/13193] Add link to post count in PMs