Add - UP and Down Regulation-Timeseries

Issue #99 new
Former user created an issue

We should add the ability to show up and down regulated genes. We could for instance colour green and red the genes up/down regulated. Then it would be nice to change this as a function of time. Maybe there could be a "time" dial (1-2-3 etc) and the network changes the colour of the nodes but not their geometry or number.