[ticket/12755] Add timeout to remote upload to prevent infinite loop

PHPBB3-12755
[ticket/12755] Add language string for timed out remote upload

PHPBB3-12755
[ticket/12755] Change upload in remote_upload() method to fit get_remote_file

PHPBB3-12755
[ticket/12755] Terminate upload loop if upload reaches filesize

Terminate the upload loop if the expected filesize has been reached instead
of trying to read more bytes until the timeout has been reached.

PHPBB3-12755
[ticket/12755] Apply de morgan to conditional

PHPBB3-12755
[ticket/12562] Revert "Add max-width to proSilver"

https://tracker.phpbb.com/browse/PHPBB3-12562

PHPBB3-12562
Merge pull request #2633 from marc1706/ticket/12755

[ticket/12755] Add timeout to remote upload to prevent infinite loop

* marc1706/ticket/12755:
  [ticket/12755] Apply de morgan to conditional
  [ticket/12755] Terminate upload loop if upload reaches filesize
  [ticket/12755] Change upload in remote_upload() method to fit get_remote_file
  [ticket/12755] Add language string for timed out remote upload
  [ticket/12755] Add timeout to remote upload to prevent infinite loop
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
  [ticket/12755] Apply de morgan to conditional
  [ticket/12755] Terminate upload loop if upload reaches filesize
  [ticket/12755] Change upload in remote_upload() method to fit get_remote_file
  [ticket/12755] Add language string for timed out remote upload
  [ticket/12755] Add timeout to remote upload to prevent infinite loop
Merge pull request #2648 from dhruvgoel92/ticket/12562

Revert "[ticket/12562] Add max-width to proSilver"

* dhruvgoel92/ticket/12562:
  [ticket/12562] Revert "Add max-width to proSilver"
[prep-release-3.1.0-RC1] Update version to 3.1.0-RC1
[prep-release-3.1.0-RC1] Add migration for 3.1.0-RC1
[prep-release-3.1.0-RC1] Prepare Changelog
[prep-release-3.1.0-RC1] Add changelog for 3.1.0-RC1
[prep-release-3.1.0-RC1] Update phpBB Version for RC2 development
Merge branch 'prep-release-3.1.0-RC1' into develop-ascraeus

* prep-release-3.1.0-RC1:
  [prep-release-3.1.0-RC1] Update phpBB Version for RC2 development
  [prep-release-3.1.0-RC1] Add changelog for 3.1.0-RC1
  [prep-release-3.1.0-RC1] Prepare Changelog
  [prep-release-3.1.0-RC1] Add migration for 3.1.0-RC1
  [prep-release-3.1.0-RC1] Update version to 3.1.0-RC1