Fix compilation on 17.04.

Report errors if loopback device creation fails

Use our build server as source for android images

Unhardcoded app launcher icon filetype

Fixed design links.

Fixes #7.

packaging: fetch android.img from aws

Use surfaceless main context when possible

Move snap packaging bits into packaging/ subdirectory

Use upstream lxc instead of patched one

Update snapcraft build configuration and add snap logo

Add template for new issues opened on github

Add List of authors

Implement single window mode option in parallel to multi-window support

For debugging and development purposes it's sometimes useful to run the
full Android system in a single and statically sized window. This is not
going to be a widely used mode but can be helpful at times.

Also makes our window/layer management a bit more modular to allow easy
additions of new strategies/impementations.

Implement simple app database which maintains app information at runtime