Added extensions, added Maven plugin
* added ipm-extension parent projec
* added ipm-network-extension
* added Maven plugin for easy use of the ipm-plugin-api
Added Documentation
* added missing javadoc
Fixed Checkstyle Violations
Improved Stability
* added missing asserts
Fixed Build
* removed Minecraf stuff from build reactor
Improved IPMNE Server
* the IPMNE server can now handle more than one connection at the
		same time and more than one request per connection