[ticket/11914] Use unix line endings in plupload queue css file

PHPBB3-11914
[ticket/11914] Update plupload to 2.0.0

There are no longer seperate javascript files for each type of uploader.
New filenames have been kept as used inside the plupload package.

PHPBB3-11914
[ticket/11914] Add assets version to included plupload scripts

PHPBB3-11914
Merge remote-tracking branch 'Marc/ticket/11914' into develop

* Marc/ticket/11914:
  [ticket/11914] Add assets version to included plupload scripts
  [ticket/11914] Update plupload to 2.0.0
  [ticket/11914] Use unix line endings in plupload queue css file