Add pairwise DE calling to livedemo.

Somehow, I managed to delete the running of edgeR_pairwise.R from the
live demo. So, I've added it back in from de_pairwise.
Update names of edgeR scripts in pipelines

Recent commits have renamed the edgeR scripts. This updates the de
pipelines.
Update glob to get ws dir

Remove username from wsdir path, so others can use it