fix(ui): License text editor

Since the license text is read from the "title" of the element, which is
already HTML encoded in PHP, the textarea value needs to be decoded
first.

src/www/ui/scripts/change-license-common.js

@@ -240,6 +240,14 @@ function removeMainLicense(uploadId,licenseId) {
   }
 }
 
+function htmlDecode(value) {
+    if (value) {
+        return $('<div/>').html(value).text();
+    } else {
+        return '';
+    }
+}
+
 function openTextModel(uploadTreeId, licenseId, what, type) {
   var refTextId = "#referenceText"
 
@@ -256,7 +264,7 @@ function openTextModel(uploadTreeId, licenseId, what, type) {
     let clearingsForSingleFile = $("#clearingsForSingleFile"+licenseId+what).attr("title");
     idLicUploadTree = uploadTreeId+','+licenseId;
     whatCol = what;
-    $(refTextId).val(clearingsForSingleFile);
+    $(refTextId).val(htmlDecode(clearingsForSingleFile));
     if (what == 4 || what == "comment") {
       createDropDown($("#textModal > form > div"), $("#referenceText"));
     } else {
@@ -265,7 +273,7 @@ function openTextModel(uploadTreeId, licenseId, what, type) {
     }
     textModal.dialog('open');
   } else {
-    $(refTextId).val($("#"+licenseId+what+type).attr('title'));
+    $(refTextId).val(htmlDecode($("#"+licenseId+what+type).attr('title')));
     whatCol = what;
     whatLicId = licenseId;
     if (what == 4 || what == "comment") {