Add RSS support via WebUI

[Naven]

As in topic, this function is even avalible on uTorrent WebUI v0.380

[s4zando]

+1

RSS capabilities should be in the WebUI (nox version).

[aritz]

Thats would be great improve.

[Dayman]

We have no web developers to implement this. If anybody wishes to rewrite WebUI code they're welcome.