F citation cff

Adding a citation.cff file, see: https://citation-file-format.github.io/

src/core/js/caosdb.js

@@ -444,7 +444,9 @@ function getEntityDescription(element) {
  * @return A list of objects with name and id of the parents.
  */
 function getParents(element) {
-    var res = element.getElementsByClassName("caosdb-parent-name");
+    // var res = element.getElementsByClassName("caosdb-parent-name");
+    var res = findElementByConditions(element, x => x.classList.contains("caosdb-parent-name"),
+                    x => x.classList.contains("caosdb-preview-container"));
     var list = [];
     for (var i = 0; i < res.length; i++) {
         list.push({