slimlining headers
Turkish language pack for STK 1.0.5
[bug/erik/63119] Nested class declaration error
[prep-release/1.0.6] Version numbers up to 1.0.6-RC1
Merge branch 'bug/erik/63119' into prep-release/1.0.6

* bug/erik/63119:
  [bug/erik/63119] Nested class declaration error
[feature/phpBB-3.0.11] Initial work on phpBB 3.0.11 support
[feature/phpBB-3.0.11] Change unstable release handeling

Slightly change the way the database cleaner handles version
data files for unstable releases.
[bug/erik/63119] Nested class declaration error
[prep-release/1.0.6] Correct version number in install.txt
STK 1.0.6 RC1
Merge remote-tracking branch 'origin/prep-release/1.0.6' into prep-release/1.0.6

* origin/prep-release/1.0.6:
  [prep-release/1.0.6] Correct version number in install.txt
  [bug/erik/63119] Nested class declaration error
  [feature/phpBB-3.0.11] Change unstable release handeling
  [feature/phpBB-3.0.11] Initial work on phpBB 3.0.11 support
[bug/erik/63143] Cannot redeclare recalc_nested_sets()

Correct check before including `includes/functions_admin.php`
[bug/erik/63144] Cannot redeclare class critical_repair in ERK

Don't load the critical repair class twice when the user is in
the ERK.
[bug/erik/63145] Database cleaner incorrectly handles special cases on phpBB 3.0.11

Forgot to add the phpBB 3.0.11 case to correctly work around various phpBB
update oddities.
Merge branch 'bug/erik/63143' into prep-release/1.0.6

* bug/erik/63143:
  [bug/erik/63143] Cannot redeclare recalc_nested_sets()
Merge branch 'bug/erik/63144' into prep-release/1.0.6

* bug/erik/63144:
  [bug/erik/63144] Cannot redeclare class critical_repair in ERK

Conflicts:
	install.txt
Merge branch 'bug/erik/63145' into prep-release/1.0.6

* bug/erik/63145:
  [bug/erik/63145] Database cleaner incorrectly handles special cases on phpBB 3.0.11

Conflicts:
	install.txt
[prep-release/1.0.6] Some small tweaks to the error handler.
[prep-release/1.0.6] Correct some indentation in `install.txt`
1.0.6 updates