Application separation (sandboxing)

This version is working abut it is not ready for production deployment
and have known issues. It is published for impress co-authors, testing
and suggestions.
Application separation (sandboxing)

Improved error handling and logging in sandboxed application
Application separation (sandboxing)

Refactored file watching and application cache separation
Application separation (sandboxing)

Fixes in config, file watching and caching
Application separation (sandboxing)

* Created class "Client" representing req, rep, http multipart fields
and files, returning context, session, sse and websockets connections,
cookies, proxying, routing, reply templating, redirection and all other
impress properties and methods for client connection handling.
* Refactores SSE and WebSocket
Application separation (sandboxing)

* Changed application structure and config
* Fixed install.js
Application separation (sandboxing)

Refactored examples
Merge pull request #20 from tshemsedinov/AppSandboxing

Version 0.1.1 with application sandboxing and deep refactoring