Sonar fix
Made MulticastSocketListenerThread a daemon thread. Fixes #155
System properties and env variables are now expanded for 'policyLocation'. Fixes #156.
Add doc how to call non-arg overloaded method.

Fixes #157.
Fxi super minor typo in the reference manual
Re-add catch for AttributeNotFoundException.

This exception seems to got lost somewhere between 1.0.6 and 1.1.0. Fixes #158
Updated and test for #158
Update changelog
Fix typos.
Remove bogus files
Add Gitter
Remove bogus file
Merge branch 'master' into 2.0

Conflicts:
	agent/jvm/src/main/java/org/jolokia/jvmagent/JolokiaHttpHandler.java
	agent/jvm/src/test/java/org/jolokia/jvmagent/JolokiaHttpHandlerTest.java
	server/core/src/main/java/org/jolokia/server/core/http/AgentServlet.java
	server/core/src/main/java/org/jolokia/server/core/util/LocalServiceFactory.java
	server/core/src/test/java/org/jolokia/server/core/util/ClassUtilTest.java
	service/discovery/src/main/java/org/jolokia/service/discovery/MulticastSocketListenerThread.java
	service/jmx/src/test/java/org/jolokia/service/jmx/handler/ReadHandlerTest.java