TCEforms: Replace "More options" icon for uncollapsing palettes
The icons to collapse and expand the Palettes ("More options") is not very usable.
As discussed in the UX Team #50354, we want to replace the icon with the small arrow (used also by the IRRE collapsing-feature) along with the palettes label as text (or text "More options" in case there is no label for this palette):
- > More options <- completely clickable
As soon as it is clicked, the palette is uncollapsed and the arrow points down and the text changes to:
- v Less options (or the label)
While doing that change, the icon should be aligned back with the field above it (move it some px to the LEFT), probably by removing the inline-style "margin-left: 20px;" and adding a new class to the TD instead.