make image_config_hash a wrapper around get_imageconfig. remove viewconfig and get_viewconfig
make image_config_hash a wrapper around get_imageconfig. remove viewconfig and get_viewconfig

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