[ticket/12956] Ensure the contact columns have been added before using them

PHPBB3-12956
Merge pull request #2858 from nickvergessen/ticket/12956

[ticket/12956] Ensure the contact columns have been added before using t...

* nickvergessen/ticket/12956:
  [ticket/12956] Ensure the contact columns have been added before using them
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12956] Ensure the contact columns have been added before using them