implement the panelLayout_callback
the callback is now defined for a certain panelLayout-key
the callback is now named "panel_callback"
fixed typos
enable assigning fields to different filter panels
updated changelog with the two new features (panel_callback, filter assignment)
Optimize filterPanel callback to follow Contao Core
cs
cs
fixed wrong reference in panels variable
Merge branch 'hotfix/3.0.1'
The numeric file mounts of a user were overridden by the real paths (see #5083)
Consider the sorting order of external style sheets (see #5038)
The news archive model might be empty in the news module (see #5048)
fixed empty headlines in faq page front end module
Merged the latest hotfix/2.11.8 changes
Allow for-Attribute for Select-Menu

The label for Select-Menus in forms didn't have a for-attribute.
Prevent oversizing of colorbox lightbox.
Corrected the main column margin when using the layout builder in combination with the responsive grid (see #5170)
Ignore jQuery event binding if the element does not support binding