Editor touchups

Fixing a problem with the editor view

Extension Manager touchups

Colour-coded border for extensions lists

Restored changes from dev branch

After there were merging problems with dev, this is an attempt to restore recent changes.

Revert "Merge pull request #67 from saschaleib/dev"

This reverts commit b4ef943ddf044da9c2720ed2ec822104ec52fdc9, reversing
changes made to 35e68a4317d34cae70a3f7c6b370de278d234441.

File uploader icons fix

See issue #70.

Fix for focus ring in tab interface

See issue #69.

Uploader file size fix.

See issue #71.

HIghlight warnings in the extensions manager

Highlight updatable items in the extensions manager

upload size field scale

Librarian fix

Minor CSS fix for better compatibility with "Librarian".

File upload improvement

Small change to the file uploader CSS

Print view: orphans workaround

CSS Fixes

CSS Upats

Modernizing CSS, and adding support for tags added by Ed-Hoc HTML.

Sub and sup touchups

Subscript and superscript fixes

Ready for new release

Menu improvements

Admin mode touchups

Admin mode views now have a more distinct style.

Mediamanager updates

Touchups to the image preview blocks

Breadcrumbs spacing fix

Small TOC update

Small update to improve TOC view when it conflicts with Ad-Hoc Wrap blocks.

Translations link colour update

Links to missing translations now use the standard colour, so that they don't stand out as much.

Updated Plugins CSS

Added dark mode and other CSS for move, searchIndex, redirect and translations plugins