FIX: Ckeditor padding + heading sizes

[Timo-Breumelhof]

2 Commits.
A. Very simple add some padding to the CkEditor screen
B. For the heading sizes, ended up being a bit more complex.

Summary

About the Heading size issue.

I noticed this:

A difference in heading sizes.
dnnFormSectionHead can contain a link or a span

The second one contains a span the others a link.

Span size:

Dnn.Platform/DNN Platform/Dnn.ClientSide/src/styles/default-css/10.0.0/ui/_forms.scss

Line 249 in 1e3b3c8

.dnnFormSectionHead span {

Anchor size:

Dnn.Platform/DNN Platform/Dnn.ClientSide/src/styles/default-css/10.0.0/default.scss

Line 20 in 1e3b3c8

font-size: inherit;

This is why they are different.
If you look at the interface, the heading a really large and IMO the size of the span is actually better than the ones containing a link. In edit users you get this:

Which looks weird IMO

So I moved what was in forms.scss into default.scss (not the best place but at least in one place)
And made them both the same size in rem.

There's a lot more one could changes here, but for now this at least fixes the issue of the header sizes.

FYI,

Manage users after this change:

Ckeditor manager

fixes #7367

[valadas]

This technically affects more than the problem in question and technically is a bit of a change for all usages of the ui/ux pattern. However I do believe it is the right thing to do as those headers were incorrectly huge everywhere. So my vote goes to just go ahead with this change.

[valadas]

@Timo-Breumelhof this is marked as draft, is that on purpose because you are still working on it w you want to mark this ready for review?

[Timo-Breumelhof]

@valadas yes, I still need to check something but ran out of time, I'll finish this one next week