[ticket/12791] String profile fields do not use links ...

smilies and line breaks in memberlist

The value is overwritten with the contact value
Added aditional check if the field is a contact so we don't overwrite it.

PHPBB3-12791
[ticket/12791] Changed the if check

Removed unneeded variable

PHPBB3-12791
[ticket/12793] String '0' does not display for string profile fields

See https://github.com/phpbb/phpbb/pull/2647#discussion_r14503051

PHPBB3-12793
[ticket/12793] Changing get_profile_contact_value to get_profile_value_raw

Changing the return to get_profile_value_raw

PHPBB3-12793
[ticket/12793] Tests (added and changed)

changed behavieur of 0 as in and added 0 as string test

PHPBB3-12793
[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
[ticket/12656] Use lang keys for CLI command descriptions

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

PHPBB3-12656
[ticket/12656] Use utf8 ’ instead of escaping '

PHPBB3-12656
[ticket/12656] Fix typo

PHPBB3-12656
[ticket/12656] Fix syntax in language file

PHPBB3-12656
[ticket/12656] Fix typo for "purged extension"

PHPBB3-12656
[ticket/12896] Add php event for admin notices

PHPBB3-12896
Merge branch 'ticket/forumhulp/12896' into develop-ascraeus

* ticket/forumhulp/12896:
  [ticket/12896] Add php event for admin notices
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12896] Add php event for admin notices
Merge pull request #2769 from rxu/ticket/12884

[ticket/12884] Add core event to the function upload_attachment()

* rxu/ticket/12884:
  [ticket/12884] Add core event to the function upload_attachment()
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12884] Add core event to the function upload_attachment()
[ticket/12843] Fix Mark forums read browser console error

When you click on "Mark forums read" in the browser console error occurs
ReferenceError: assignment to undeclared variable phpbbAlertTimer
ajax.js (line13)

PHPBB3-12843
Merge branch 'ticket/sumanai/12843' into develop-ascraeus

* ticket/sumanai/12843:
  [ticket/12843] Fix Mark forums read browser console error
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/12843] Fix Mark forums read browser console error