Remove plupload and related files, update copyright file
Merge pull request #1624 from mahagr/master

Remove plupload and related files, update copyright file
Merge pull request #1625 from coder4life/master

Fix #1563 K3.0/J3.0/J2.5 Backend: Pagination fixes.
K3.0/J3.0/J2.5 Backend: Small language tweak.