Fails if no stations exist

[penrods]

For a user who is brand-new to the Pandora ecosystem (e.g. someone just trying stuff out) the skill will fail if there are no "stations" already configured for the paired Pandora account. The skill should at least notify them of what to do, if not walk them through creating the first station.

[binyamin]

It also gives an incorrect response: Pandora failed to load. Please verify your email and password at home.mycroft.ai. My email and password were correct.

[pixelherodev]

To further exacerbate this issue, it also only detects stations when it starts up. In addition to not letting you create stations, if you do create one (whether through the website or injecting commands into the FIFO), it fails to detect them.

I'll try to patch the skill to allow creating stations over the next few days.