Fixes in fileserver plugin

URL Mapping fix for FileServer plugin (v0.2.1)

Fixes mapping query string as a part path so requests with query strings aren't incorrectly mapped anymore.

Fileserver plugin

0.2.0 plugins for ElastHttpD

• Added pluggable architecture for extending server capabilities
• Implemented file server plugin (PUT/POST/DELETE/GET/HEAD)

The initial release

The elastic minimal HTTP server with basic HTTP/1.1 support.