web/lib/server: Add methylation

web: Rename contact, eference - equal to emty in the search

This are the main changues: adding new utilities (checks the number o…

…f variants and the number of novel variants produced by one or more samples), adding tooltips, links, adding information about transcripts, adding contact request, modifying the graphical display of statistics and show loading on saturation graph.

web: Show AAF instead of MAF, change introduction text

Fixed Variant compressor