Lots of changes to enable feature tables to be drawn from userdata (needed for Karyoview rewrite)
Lots of changes to enable feature tables to be drawn from userdata (needed for Karyoview rewrite)

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode