Update dependencies to match GWT master (#12871)

cssparser 0.9.5 -> 0.9.11
jetty 6.1.11 -> 8.1.12.v20130726
commons-codec 1.3 -> 1.8
commons-logging 1.1.1 -> 1.1.3
commons-io 2.2 -> 2.4
commons-lang 2.6 -> 3.1

Change-Id: Ie5f1b7d1c0b2e31533806640d9a5236e76787d2e