Separate element type reporting into speech and braille

[SaschaCowley]

Is your feature request related to a problem? Please describe.

Users would prefer the ability to separate the reporting of element types between speech and braille.

Describe the solution you'd like

Change the checkboxes under "Elements" in "Document formatting" to dropdowns, allowing users to select betwen off, speech, brailleand speech and braille.

Describe alternatives you've considered

Implementing a tab control where users can set speech and braille reporting separately.

Additional context

See #1885 for the original discussion.