[ticket/13138] Do not use cookie data and autologin while forcing a user_id

PHPBB3-13138
[ticket/13168] Fix mbstring warnings in ACP for PHP 5.6 compatibility

PHPBB3-13168
Merge pull request #3039 from nickvergessen/ticket/13138

[ticket/13138] Only use cookie data when we do not force a user_id
Merge pull request #3047 from Elsensee/ticket/13168

[ticket/13168] Fix mbstring warnings in ACP for PHP 5.6 compatibility

* Elsensee/ticket/13168:
  [ticket/13168] Fix mbstring warnings in ACP for PHP 5.6 compatibility
[ticket/12120] Remove EXreaction from active authors

PHPBB3-12120
Merge pull request #3051 from nickvergessen/ticket/12120

[ticket/12120] Remove EXreaction from active authors
[ticket/13234] Never allow autologin/remember me to modify the userid

This prevents admin relogin with forced user id from overwriting
remember me cookies

PHPBB3-13234
[ticket/13234] Fix conditions and CS

PHPBB3-13234
Merge pull request #3090 from Nicofuma/ticket/13234

Ticket/13234
[ticket/13324] Update sami/sami and fabpot/goutte for new zipball location.

PHPBB3-13324
Merge pull request #3133 from bantu/ticket/13324

[ticket/13324] Update sami/sami and fabpot/goutte for new zipball location

* bantu/ticket/13324:
  [ticket/13324] Update sami/sami and fabpot/goutte for new zipball location.
[ticket/13331] Use docs target for this branch, add docs-all for dev branches.

PHPBB3-13331
Merge pull request #3142 from bantu/ticket/13331

[ticket/13331] Use docs target for this branch, add docs-all for all branches
[ticket/13341] Change coverage to whitelist to prevent errors with temp files.

b4f95deefc9d456c5a2d0f6338f6dcecc0829652 suggests that this can lead to issues
with classes having the same name. However, this does not seem to be a problem
with the current version of PHPUnit we are using.

Despite https://phpunit.de/manual/4.1/en/code-coverage-analysis.html saying
that addUncoveredFilesFromWhitelist="true" is optional, this seems to be on by
default in PHPUnit 4.1.0. As a result, all files are considered for code
coverage; which is what we want.

processUncoveredFilesFromWhitelist is however false (by default) and as such
even files that are considered for code coverage are not processed through PHP
when not used in actual tests. Since it is already impossible to test multiple
classes with the same name in the same test run (without process isolation),
because that would already lead to "cannot redeclare class" errors, it is also
impossible for "cannot redeclare class" errors to happen in test coverage.

PHPBB3-13341
Merge pull request #3146 from bantu/ticket/13341

[ticket/13341] Change coverage to whitelist to prevent errors with temp ...
[ticket/10442] Adds <dd>&nbsp;</dd> to <dl> for xhtml correctness

PHPBB3-10442
Merge pull request #3164 from Crizz0/ticket/10442

[ticket/10442] Adds <dd>&nbsp;</dd> to <dl> for xhtml correctness
[ticket/13376] Revert unnecessary change for cookies called GLOBALS 92f554e3

Also introduce a clear cookie message hardcoded just in case.

PHPBB3-13376
Merge pull request #3180 from naderman/ticket/13376

[ticket/13376] Revert unnecessary change for cookies called GLOBALS 92f554e3
[ticket/11613] Allow cookies to work on netbios domains

PHPBB3-11613