[ticket/11799] Send anti abuse headers in "new password" emails.

PHPBB3-11799
[ticket/11769] Correctly supply the post author's username in posting.php

Only supply the username, when it is a guest posting or we edit and it was
supplied, otherwise post_data might hold data of the post we quote, in which
case username is the original poster, not the current one.

PHPBB3-11769
[ticket/11769] Fix language issues in the doc blocks

PHPBB3-11769
[ticket/11769] Allow '0' as username in notification mails

PHPBB3-11769
Merge remote-tracking branch 'bantu/ticket/11799' into develop-olympus

* bantu/ticket/11799:
  [ticket/11799] Send anti abuse headers in "new password" emails.
[ticket/11769] Allow '0' as username

PHPBB3-11769
[ticket/11769] Allow using 0 as poster name

PHPBB3-11769
[ticket/11821] Fix comma usage next to "You are receiving this notification".

This is a partial backport of 31502cdd6c3a5bac5164ec30530e5b4bf63f3196.

PHPBB3-11821
Merge remote-tracking branch 'bantu/ticket/11821' into develop-olympus

* bantu/ticket/11821:
  [ticket/11821] Fix comma usage next to "You are receiving this notification".
Merge remote-tracking branch 'nickvergessen/ticket/11769' into prep-release-3.0.12

* nickvergessen/ticket/11769:
  [ticket/11769] Allow using 0 as poster name
  [ticket/11769] Allow '0' as username
  [ticket/11769] Allow '0' as username in notification mails
  [ticket/11769] Fix language issues in the doc blocks
  [ticket/11769] Correctly supply the post author's username in posting.php
Merge branch 'prep-release-3.0.12' into develop-olympus

* prep-release-3.0.12:
  [ticket/11769] Allow using 0 as poster name
  [ticket/11769] Allow '0' as username
  [ticket/11769] Allow '0' as username in notification mails
  [ticket/11769] Fix language issues in the doc blocks
  [ticket/11769] Correctly supply the post author's username in posting.php

Conflicts:
	phpBB/language/en/email/forum_notify.txt
	phpBB/language/en/email/newtopic_notify.txt
	phpBB/language/en/email/topic_notify.txt
[ticket/11823] Set up nginx server to match PHP files with characters after .php

PHPBB3-11823
[prep-release-3.0.12] Bumping version number for 3.0.12-RC3.
Merge remote-tracking branch 'imkingdavid/ticket/11823' into develop-olympus

* imkingdavid/ticket/11823:
  [ticket/11823] Set up nginx server to match PHP files with characters after .php
[prep-release-3.0.12] Update Changelog for 3.0.12-RC3 release.
[ticket/11829] Use report_closed to determine status in MCP report_details

Instead of using post_reported of the post or message_reported of the pm, use
report_closed of the report itself to reliably determine whether this
particular report is closed or not in the report_details view of the MCP.
This fixes a bug where the report_details view would not show that the report
shown was closed and display a "Close report" button that had no effect.

PHPBB3-11829
Merge branch 'prep-release-3.0.12' into develop-olympus

* prep-release-3.0.12:
  [prep-release-3.0.12] Update Changelog for 3.0.12-RC3 release.
  [prep-release-3.0.12] Bumping version number for 3.0.12-RC3.

Conflicts:
	phpBB/includes/constants.php
	phpBB/install/database_update.php
	phpBB/install/schemas/schema_data.sql
[ticket/11831] Update fabpot/goutte to 1.0.*

PHPBB3-11831
[ticket/11831] getAttribute was replaced with attr

PHPBB3-11831
[prep-release-3.0.12] Remove changelog entry for ticket that was not resolved.

A wrong fix version was assigned to PHPBB3-11288.