v0.1.6-beta

First test version to support CareLink servers with multiple patient follow enabled, which is currently only enabled in the US. Should work with both carepartner and patient accounts. New patient username parameter only required for carepartner with multiple patients. If no patient is defined the first patient will be used automatically.
Variants are provided for testing and to be able to keep main xdrip app until changes are final and released in main xdrip app.
If xDrip app is already installed it is recommended no to uninstall it and to install one of the variants, which doesn't conflict with the already installed xDrip app.