cleanup: remove confusing paragraph button

[azul]

The paragraph button was confusing for a number of reasons:

• it only acts on headings

• the symbol indicates a line break
  rather than the removal of formatting

• there are other ways to turn headings back to normal text

• all other formatting is removed
  by clicking the same button again

• Resolves: consolidate header and paragraph buttons? #353

• Target version: master

Summary

See #353 for the discussion leading to this pull request.

[jancborchardt]

Sounds good! :)

As said in the chat too, this needs the heading action menu (the dropdown trigger) to be highlighted too when you selected a heading so you see what to open to deselect the formatting again.

[asaage]

there are other ways to turn headings back to normal text

@azul how would i do that now?
I've copy&pasted text from an arbitary website and headings are carried over as such.
I really can't find a way to turn them into normal text.

[susnux]

@asaage

I really can't find a way to turn them into normal text.

Just select the heading and click on the heading button again (e.g. click: heading 1 will make the text a heading of level 1, clicking the button again makes it normal text again):

[jancborchardt]

@asaage @susnux in a design review we also found that it’s confusing how to go back to normal formatting. We will add back a "Body text" entry in that menu, see #2836

Add a separate item in the heading menu "Body text" as the first item (but still only show dot indicator when any heading level is selected)