CLC-1005 Add script to install missing ungemified JARs

https://jira.media.berkeley.edu/jira/browse/CLC-1005

If this looks OK to the team, I'll add the MAVEN_REPO URL to the server accounts (and JIRA and Confluence).

Unfortunately for our purposes, the JRuby lib is not in shared NFS, and so when this needs to be run (not often, I hope), it needs to be run on all three servers.