Replace illuminate/container with our own simpler container
Add icons for database and server
Reduce speed of colorbox slideshow
Fix: #4553 - route names when not class names give error
CodeStyle
Fix: webmanifest.json not working with HTTP basic auth
Fix: #4389 - move the CSRF token to the end of all forms, so we can detect truncated input variables
Update and use Validation class
PHPdoc
A11Y - aria-label for search button
A11Y - use <main> element on control panel pages
Add PHP 8.1 to the test matrix
Remove PHPDebugBar - not compatible with PHP8 and not being updated
Use wt- namespace for data attributes
Upgrade Bootstrap from 4 to 5. Fixes: #3673. Fixes: #3400.
Remove old HTML attributes
Fix favicons
Fix: #3902 - remove transparent background for apple-touch-icon.png
Fix: #3513 - setup wizard needs a cache (before it is normally initialised)
Use bootstrap container breakpoints
Fix: #1384, fix #3375 - replace wheelzoom with pinch-zoom-element
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