This is needed for Android since it needs to communicate with java apis
which require everything on the main thread. The additional thread was
not really needed since you can implement using a signal based approach
which ends up being the same thing.

Usability plus, new features:
- 3DR Radio support
- APM Stack support

Also adjusting text layout while at it.

to the clearer, standard versions of the AWS links.

Everything is now based off of default font pixel size

Also adding a constant for the font size in SensorComponent.