arrange filter elements in panel

[zonky2]

arrange filter elements in panel instead of token filter with filter[attr_name1,attr_name2;attr_name3]

use , inline and ; as line break

all other filter elements comes after that

PS: add attribute name as css class in div-container like

<div class="tl_filter tl_subpanel division even first last">

[discordier]

This will then diverge from Contao and has to be documented accordingly.

[zonky2]

This will then diverge from Contao and has to be documented accordingly.

Jo