Dependency Updates

Greetings! Your friendly Depend On bot here with some updates!

I made the following updates:

newrelic-api -> 3.9.0
httpclient -> 4.3.5
selenium-java -> 2.42.2
ecwid-mailchimp -> 2.0.1.0
joda-convert -> 1.7
joda-time -> 2.4
logback-classic -> 1.1.2
jetty-webapp -> 9.2.2.v20140723
I failed to make the following updates:

scala-library -> 2.11.2