HTML should be stripped from :doc, :hoogle, etc. in console mode

[ches]

When running in a console instead of notebook, e.g. jupyter console --kernel=haskell, the :doc and :hoogle commands output raw HTML, which isn't so useful in a terminal 😄

It would be nice if they appeared similar to hoogle --info and hoogle --color output from the CLI tool while in console mode (exactly how I have GHCi commands set up already, incidentally).

I'm not familiar with the IHaskell codebase nor the Jupyter infrastructure yet, but I'll try to take a look into it when time allows. Very cool project, thanks!

(Small side note, maybe worth filing in a separate request: it would be nice to have an option to control limit of Hoogle results returned).