Refactor code under the following guidelines:

• Inversion of control
• MVVM (mostly moving application logic out of view components)
• Better specs for services
• Thread safety
• Establish better class hierarchy for DRY

Issue:

Media uploads fail if the user leaves Goblinoid before it finishes.

Solution:

Create an AndroidService, which allows us to continue uploading media in a background thread.

Solution Requirements:

• Create a new main.py in a service subdir, per python-for-android requirements
• Use OSC to communicate between app and service. Use tshirtman's setup as a guide
• Since kivy can only send strings to and from the service, we need the service to instantiate the PyPump user object. This means the service needs to access credentials.json
• Figure out how to end the service once the upload is complete. After my initial tests, this appears non-trivial
• Bonus: See if python-for-android allows for multiple services. Ideally, we could turn all Goblinoid services into Android services