[ticket/12448] Allow null as default value for columns

PHPBB3-12448
[ticket/12448] Fix null columns for postgres

PHPBB3-12448
[ticket/12448] Fix null columns for MS SQL

PHPBB3-12448
[ticket/12861] Add event to modify the post, poster and attachment data

PHPBB3-12861
[ticket/12857] Add template events breadcrumbs_before/after

PHPBB3-12857
[ticket/12857] Add missing template events breadcrumb_prepend

To insert links after site-home

PHPBB3-12857
[ticket/12656] Pass user object into all console commands.

PHPBB3-12656
[ticket/12748] Fix typo in terms of use

PHPBB3-12748
Merge pull request #2755 from Elsensee/ticket/12748

[ticket/12748] Fix typo in terms of use

* Elsensee/ticket/12748:
  [ticket/12748] Fix typo in terms of use
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12748] Fix typo in terms of use
[ticket/12871] Add PHPBB_DISPLAY_LOAD_TIME const to config.php on installation

To make it consistent with another config.php constants,
PHPBB_DISPLAY_LOAD_TIME is to be put in config.php during installation as well.

PHPBB3-12871
[ticket/12872] Add poster_id to viewtopic_modify_post_row

To allow extension authors to use the poster_id var.

PHPBB3-12872
[ticket/12872] Add poster_id to viewtopic_modify_post_row

Change "rc3" to "RC3".

PHPBB3-12872
Merge remote-tracking branch 'tmbackoff/ticket/12872' into develop-ascraeus
Merge branch 'develop-ascraeus' into develop
[ticket/12560] Add methods to set upload and temp paths in plupload

The paths will be reset to the default paths after an upload is complete.

PHPBB3-12560
Merge pull request #2651 from nickvergessen/ticket/12448

[ticket/12448] Allow null as default value for columns
Merge branch 'develop-ascraeus' into develop

# By Joas Schilling
# Via Dhruv Goel (1) and Joas Schilling (1)
* develop-ascraeus:
  [ticket/12448] Fix null columns for MS SQL
  [ticket/12448] Fix null columns for postgres
  [ticket/12448] Allow null as default value for columns
Merge pull request #2752 from bantu/ticket/12656

[ticket/12656] Pass user object into all console commands for translation
Merge branch 'develop-ascraeus' into develop

# By Andreas Fischer
# Via Andreas Fischer (1) and Dhruv Goel (1)
* develop-ascraeus:
  [ticket/12656] Pass user object into all console commands.