[ticket/11752] HTTP -> HTTPs in email/installed.txt

PHPBB3-11752
Merge remote-tracking branch 'bantu/ticket/11752' into prep-release-3.0.12

* bantu/ticket/11752:
  [ticket/11752] HTTP -> HTTPs in email/installed.txt
[ticket/11524] Add another isset() to mitigate "Illegal string offset 'limit'"

... on PHP 5.4 or higher.

PHPBB3-11524
[ticket/11753] Update MySQL upgrader schema data.

PHPBB3-11753
[ticket/11753] Remove ?> from MySQL Upgrader.

PHPBB3-11753
Merge remote-tracking branch 'bantu/ticket/11524' into prep-release-3.0.12

* bantu/ticket/11524:
  [ticket/11524] Add another isset() to mitigate "Illegal string offset 'limit'"
Merge remote-tracking branch 'bantu/ticket/11753' into prep-release-3.0.12

* bantu/ticket/11753:
  [ticket/11753] Remove ?> from MySQL Upgrader.
  [ticket/11753] Update MySQL upgrader schema data.
Merge branch 'prep-release-3.0.12' of git://github.com/phpbb/phpbb3 into prep-release-3.0.12

* 'prep-release-3.0.12' of git://github.com/phpbb/phpbb3:
  [ticket/11753] Remove ?> from MySQL Upgrader.
  [ticket/11753] Update MySQL upgrader schema data.
  [ticket/11524] Add another isset() to mitigate "Illegal string offset 'limit'"
  [ticket/11752] HTTP -> HTTPs in email/installed.txt
[ticket/11775] Fix error when moving the last post to another topic

PHPBB3-11775
[ticket/11775] Backport moving of the posting functions to 3.0

PHPBB3-11775
[ticket/11775] Add functional test for moving the last post

PHPBB3-11775
[ticket/11775] Split test into multiple steps

PHPBB3-11775
[ticket/11775] Remove spaces at line ends

PHPBB3-11775
[ticket/11775] Fix doc blocks syntax

PHPBB3-11775
Merge remote-tracking branch 'nickvergessen/ticket/11775' into prep-release-3.0.12

* nickvergessen/ticket/11775:
  [ticket/11775] Fix doc blocks syntax
  [ticket/11775] Remove spaces at line ends
  [ticket/11775] Split test into multiple steps
  [ticket/11775] Add functional test for moving the last post
  [ticket/11775] Backport moving of the posting functions to 3.0
  [ticket/11775] Fix error when moving the last post to another topic