Fix to freezing when using zoom bar of GenomeMaps

Updates submodule to use https://github.com/opencb/jsorolla/pull/11.

The other changes are just a change in the order of definition: firefox throws an error if a function declaration uses undefined variables (https://github.com/jmmut/eva/blob/20c648e385d634c882e02fd4056588c1f5fd4dd7/eva-web/src/js/variant-widget/eva-variant-widget-panel.js#L257).