[ticket/12872] Add poster_id to viewtopic_modify_post_row

Change "rc3" to "RC3".

PHPBB3-12872
[ticket/12801] missing $phpbb_dispatcher as a global

PHPBB3-12801
[ticket/12800] Missing $phpbb_dispatcher as a global

PHPBB3-12800
[ticket/12800] removed superfulous tab character

PHPBB3-12800
Merge remote-tracking branch 'tmbackoff/ticket/12872' into develop-ascraeus
[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
[ticket/12873] Test the good identifier in \phpbb\db\tools

We need to rename the index key because with the default prefix (phpbb_)
this key has a length of 31. And because we don't accept the keys longer
than 30 characters we should ensure that by default no key is longer than
30 characters.

PHPBB3-12873
[ticket/12882] Update search_type when it's not prefixed by phpbb_search

PHPBB3-12882
[ticket/12883] Do not use basename() to get the search class in tidy_search

PHPBB3-12883
[ticket/12882] Use a new migration

PHPBB3-12882
[ticket/12738] Update constructor docblock

PHPBB3-12738
Merge pull request #2651 from nickvergessen/ticket/12448

[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 pull request #2745 from nickvergessen/ticket/12861

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

* nickvergessen/ticket/12861:
  [ticket/12861] Add event to modify the post, poster and attachment data
[ticket/12851] Fix the Font colour button title

PHPBB3-12851
Merge pull request #2757 from rxu/ticket/12871

[ticket/12871] Add PHPBB_DISPLAY_LOAD_TIME const to config.php on installation

* rxu/ticket/12871:
  [ticket/12871] Add PHPBB_DISPLAY_LOAD_TIME const to config.php on installation
[ticket/12884] Add core event to the function upload_attachment()

Add core event to the function upload_attachment()
in functions_posting.php to provide ability for extensions
to perform additional actions on uploaded files, like resizing etc.

PHPBB3-12884
Merge pull request #2766 from marc1706/ticket/12560

[ticket/12560] Add methods to set upload and temp paths in plupload
[ticket/12656] Use lang keys for CLI command descriptions

PHPBB3-12656
[ticket/12656] Use lang keys for all CLI strings

PHPBB3-12656