Split save mission to Json file in two so you have the option to saving it to a file or to a QByteArray Json blob.
Virtualize all camera functions to allow deeper access.

* Flight modes still not implemented. Waiting on message change.
* Also includes various cauterization of UI things which should not be
available on high latency link.

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Update unit tests to catch this

This time to handle correctly updating plan/fly view when plan changes

Update the user model to a single controller instead of multiple