application server, loggers, HTTP server framework and fixes

- ADD: app services loads and initializes modules and services now
- ADD: HTTP server framework
- ADD: Flatten() method to AggregateLogger class
- FIX: .NET implementation of SystemConsole did not read or set the
text/background colors from/of System.Console
- FIX: OnGetInstance() of DelegateServiceLocator
- FIX: .NET 4 version of AsyncLogger was not set as non thread-safe
- FIX: typos