REML lists not rendered in plain text or RTF

[delphidabbler]

The newly implement REML lists render correctly as HTML, but not as Plain Text or RTF.

To reproduce:

1. Create a snippet, routine kind, with REML lists in the description.
2. Select the new snippet
3. Menu option File | Save Annotated Source
4. In save dialogue choose Pascal Include File type and any comment style except "No descriptive comments"
5. Click Preview button. Note how text in header comment has now bullets, numbers or indenting.
6. Go back to 4, but this time choose Rich Text File type a click Preview again. Same problem.

[delphidabbler]

See also issue #82 being fixed in the same feature branch

[delphidabbler]

This, and issue #82, are proving very difficult. The implementation of REML / active text lists is buggy and incomplete.

Having to rewrite the REML parser and modify the active text implementation.

Also REML docs are wrong for content of <li> tags. Also need to check REML help topic.