Aigents Android Lite Client

[akolonin]

As a simplified version of #24, we may have lightweight Aigents client with native Android user interface exposing the functions present in https://github.com/aigents/aigents-web and exposed at https://aigents.com/
The lightweight client may be optionally done in JavaScript instead of the Java.
In this case, the client data will be stored in the cloud (as opposed to #24 where the data is stored on the mobile device), but the user should have ability to change the "home Aigents Server" destination in the application settings, so the same client application can be used to access some public "Aigents Servers" as well as private "Aigents Servers" owned by user or user's company, for example.