Annotation Editor should not emulate word wrapping with line breaks

The CAS Editor adds additional line breaks depending on the line length hint. This is a rather strange way to break long lines.

The text wrap can be adjusted automatically when setWordWrap of the StyledText widget is set to true (depending on the editor size). Therefore I suggest that we remove the "line length hint" logic and instead replace it with the styled texts word wrap logic. This should be configurable in the settings.