This lets us create ValueSlider and CollapsibleContainer nodes properly via the add node button, instead of instancing their scenes. They have also become more a bit more themeable. Eventually, ValueSlider.tscn and CollapsibleContainer.tscn will be deleted.
* Theme edits
Changed all the themes to be more consistent, buttons and panel containers have rounded edges. Note that the spacings have been switched too, so it needs subtle remakes in the placing of each element. Especially the tool buttons. Also check the themes on preferences (need better spacing) and rulers are not included.
* Some UI fixes
* Reduced size of themes
* Fixed more spacing issues and replaced timeline grabber icon
* Removed old theme icons
* Change purple and light rulers
* Fix purple top menu & caramel rulers
Co-authored-by: Erevoid <Erevoid@users.noreply.github.com>
Co-authored-by: OverloadedOrama <35376950+OverloadedOrama@users.noreply.github.com>