addition of t-test and anova modules

Don't know if you want to merge in the changes you made to my local version related to Annotations-- both of the following files have an import for the javascript/rhino jar:

web/src/main/java/edu/dfci/cccb/mev/web/configuration/PersistenceConfiguration.java
web/src/main/java/edu/dfci/cccb/mev/test/annotation/domain/probe/configuration/TestAnnotationServerConfiguration.java 

I didn't write tests for it yet...but that will come eventually.