Port metadata.json to KF6

Port to KF6

Left align announcement message

Fix dynamic typing bug

Merge branch 'expand'

Add reminder to migrate to KF6

Use pointing hand cursor for announcements too

Add missing i18n()s

Add "No announcements/assignments" screenshot

Add open in browser button in expanded view

Clicking title opens activity instead of toggling finished

Add a bunch of comments

Set clearance for scrollbar

Fetch and display announcement message

Make list item expandable

Break long lines

Show buttons only when mouse is hovering

Fix spacing

Use PlasmaComponents.ListView

Update TODOs