Is there any way for do not inherrit my application from NgnApplication?

```
What steps will reproduce the problem?
1. Make all the code that uses the ngn-stack except inheritance of the
Application from NgnApplication.
2. Run your application.

What is the expected output? What do you see instead?
I expect that it will work correctly but it raises NPE.

What version of the product are you using? On what operating system?
Ngn Stack 2.0 for Android.

Please provide any additional information below.
Our application contains a lot of functions. The videocalls is one of them. We
need to allow user to switch off and switch on videocalls. But the only way to
use ngn-stack is to inherit the application from the NgnApplication. This
inheriting will force a lot of fields to be created when the application is
started. But is there some way to work around the inheriting and run the
ngn-stack initialization by calling the function?

```

Original issue reported on code.google.com by `nadk...@gmail.com` on 4 Sep 2013 at 9:33