Merge pull request #1 from neoludo/FEATURE_BASIC_AUTH

integrate pull request on BASIC authentication
downgraded Jetty version to 8 instead of 9 that required JVM 7
Add authentication failing test
Merge branch 'basic_authentication'

Conflicts:
	bpm/bonita-api/bonita-client-api-http/pom.xml
	bpm/bonita-api/bonita-client-api-http/src/test/java/org/bonitasoft/engine/api/HTTPServerAPIIT.java
Merge branch 'master'