Simplified conda environment

• There is now a unique conda environment to install. No more Rscript to install a bunch of R packages.
• The installation script has been removed. A simple command to create the conda environment replaces the installation script.

Report enhancements

• The volcano and MA-plot have been enhanced. You can now hover on the points to get the genes names.
• The enrichment tables have been added for GO and KEGG.