Currently only very limited HTML-formatting is supported for tooltips.
I'd like that a fuller range is possible so that I can add:
- (un)ordered lists
 - images
 - tables
 - headers
 - references
 - etc.
 
If this is not possible I'd like some functionality to include an information-button behind columns in a field in which information like the above can be shown (as e.g. pop-up).
