added: tabs, Simulator \Callback class
edited: server and ui -> added rJava simulate function
added Simulator.java
added interpolation for P(elim) = 99
Merge branch 'master' into barplotUI
use pastrounds for interpolation & fix unequal length in geom segment
don't draw vlines for unchecked treatments
barplot using ggplot2. still needs polishing.
Merge branch 'withpastrounds'