[todo-mvvm-rx]Having a reference to Context in ResourceProviders might leak memory?

Hi @florina-muntenescu I noticed that in [ResourceProvider](https://github.com/googlesamples/android-architecture/blob/dev-todo-mvvm-rxjava/todoapp/app/src/main/java/com/example/android/architecture/blueprints/todoapp/util/providers/ResourceProvider.java) there's a reference to the context. Will this be leaking memory? or how is this handled? should it be handled at all?

Open the linked ResourceProvider.java file first and inspect how its Context reference is obtained and used. Trace the reference through the todo-mvvm-rxjava sample; done requires a clear, maintainer-agreed conclusion about whether the lifecycle can leak memory and what resolution, if any, is needed.

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