When generating schema, merge schemas from deps

[bitwalker]

Right now if you have app A which depends on app B, and both have conform schemas, you have to duplicate B's schema info in A if you want to use the .conf to configure both A and B. We can improve the usability and maintainability of configs by merging schemas from dependencies into the schema of the top-level app when generating it.

Potential issues:

• Cyclical dependencies, how do we handle them?
• How deep do we go? One level? N-levels? All the way?
• Are there undesired side-effects by supporting this functionality

[bitwalker]

This is implemented now in 0.8.5.