Moving 'Remove Items' to bottom of filelist and imagelist.

.. and fixing tabs-to-spaces, while i’m at it. See #2360
Updated CKeditor to 4.4.6, and all used plugins to the latest versions.
Updating Changelog
Updating changelog.md
Updated jQuery to 1.11.2 for Bolt backend.
Merge branch 'master' into feature/update-jquery
Merge pull request #2367 from bobdenotter/feature/imagelist-tweaks

Moving 'Remove Items' to bottom of filelist and imagelist.
Merge pull request #2368 from bobdenotter/feature/update-ckeditor

Updated CKeditor to 4.4.6, and all used plugins to the latest versions.
Merge pull request #2369 from bobdenotter/feature/update-jquery

Updated jQuery to 1.11.2 for Bolt backend.