Version 0.1.83

* Implemented linking applications from any disk location to Impress
application directory using file "application.link" containing path to
application
* Added list of local IP addresses for all network interfaces:
impress.localIPs
* Added client.ip (containing client IP) and client.local (true or
false, is client IP in impress.localIPs)
* Added virtual group "local" in access.js to allow self requests
without authentication, close #100