Fixes #95

Since switching from `model.urlResult() + model.get("name")` to `model.composedUrl()`, the url is encoded already and does not need to be encoded and doubly encoded :/
Merge pull request #125 from SpiderOak/issue-95

Fixes #95

I'm now able to mark storage items as favorites!  My device still hangs when I try to mark items within share rooms as favorites, but I can create a separate issue for that, and that can be addressed in a separate branch.