Remove storm-web from the codebase

[emre]

Maintaining it is hard. People want to use it can make a separated package and maintain it.

[jaddison]

If removing it isn't an option, it would be good to have it as an optional package. So:

pip install stormssh

would install the cmd-line only storm, while:

pip install stormssh[web]

would install storm along with web components, giving storm web functionality.

Not having fully ready the docs, I was surprised to see flask being installed just so I could manage my ssh connections! :)

[denzuko]

@emre sure, I'll be glad to maintain it. Even submitted an PR with a few changes to make the web part easier to maintain and use with extra systems.