More tests on client-side extension behavior.
Updated pom.xml to refer to Jetty 7.6.15 from the staged repository.
Removed repositories referencing staged Jetty releases.
More tests on client-side extension behavior.
Fixed compilation error due to merge from 2.9.x.
Better error message if WebSocket's ServerContainer is missing.
Small changes to make the demo run with Jetty 9.1.4.
Merged branch '2.9.x' into 'master'.