Upgrade jetty (9.2.2.v20140723) to a newer version that doesn't break the build on travis

Travis error: [ERROR] Failed to execute goal on project common-core: Could not resolve dependencies for project org.netarchivesuite:common-core:jar:5.0-RC3-SNAPSHOT: Failed to collect dependencies at org.eclipse.jetty:jetty-runner:jar:9.2.2.v20140723 -> org.eclipse.jetty:jetty-jsp:jar:9.2.2.v20140723 -> org.glassfish.web:javax.servlet.jsp:jar:2.3.2 -> org.glassfish:javax.el:jar:3.0.1-b06-SNAPSHOT: Failed to read artifact descriptor for org.glassfish:javax.el:jar:3.0.1-b06-SNAPSHOT: Could not transfer artifact org.glassfish:javax.el:pom:3.0.1-b06-SNAPSHOT from/to codehaus-snapshots (https://nexus.codehaus.org/snapshots/)
: nexus.codehaus.org: Unknown host nexus.codehaus.org -> [Help 1]