Hi folks,

after using omero-py for a while (predominantly from Jupyter notebooks) I thought it would be nice to introduce some more __repr_html__ methods to some of the more commonly used wrapper classes. Classes where I could see value to it:

• TagAnnotationWrapper: Could draw a small svg object of a Tag with the tag's label/id
• MapAnnotationWrapper: could use a conversion to a pandas dataframe or just spawn a simple html table.
• DatasetWrapper: ID & name of dataset, number of images inside?
• PlateWrapper: Fancy svg display of well object with correct number of wells, row/column labels, etc?

I suppose all these __repr_html__ methods should go into the respective derived classes to avoid errors like #435