* Move all the dendrite config in to a single place
* Add tests for config parsing
* replace syncserver config with common config
* Replace client API config with common config
* Replace federation API config with common config
* Replace media api config with common config
* Replace room server config with common config
* Remove unused readKey function
* Fix the integration tests
* Comment on hardcoding roomserver to HTTP
* Add a method for getting RoomServerURL
This moves the hardcoding of HTTPs into one place.
Reorder functions to have public API functions in alphabetical order at
the top, internal package functions at the bottom in call order.
Use RawURLEncoding to avoid padding the hash with '='.
Use stronger types for paths in public API.
Simplify comments.
