web app asks local web server for all catalog uuids ever

[marcellmars]

it should ask only for active catalogs. https://github.com/marcellmars/letssharebooks/blob/b520250b8a3b108ce559c0599b9bf2127d564d15/library/static/local_calibre.js#L14 should change to: $.getJSON('get_active_catalogs', {}).done(function(catalogs) {

and https://github.com/marcellmars/letssharebooks/blob/master/library/libraries.py should get: get_active_catalogs similiar to: https://github.com/marcellmars/letssharebooks/blob/b520250b8a3b108ce559c0599b9bf2127d564d15/library/libraries.py#L297