Environment is no longer generated separately for each target, but only
once the configuration is saved.
Note that the environment is automatically updated during
re-configuration, based on a "version" file stored in the environment.
We had to backtrack from the latest release of the
android app, which is not compatible with the mobile api v0.5 available
in Hawthorn. This should change in ironwood.
Also, we included the correct oauth client ID in the app, which
prevented communication with the LMS.
The android app is now out of beta \o/
Close #89
