fixing error with null licenses

sails/src/api/models/License.js

@@ -70,7 +70,9 @@ module.exports = {
     Class methods
   */
   hasExpired: function (license) {
-    return (new Date(license.expiration_ts) - new Date() < 0);
+    if (license)
+      return (new Date(license.expiration_ts) - new Date() < 0);
+    else return true;
   },
 
   /**

sails/src/api/models/Student.js

@@ -109,12 +109,12 @@ module.exports = {
     toJSON: function () {
       var student = this.toObject();
       student.pic = sails.config.pictogram.urls.getStudentAvatarUrl(student.pic);
-      if (student.license) {
-        student.license = student.license[0] ? student.license[0] : null;
+      if (student.license && student.license[0]) {
+        student.license = student.license[0];
         student.license.isValid =  !License.hasExpired(student.license);
         student.license.isTrial = student.license.type == 'trial';
         student.license.isOfficial = student.license.type == 'official';
-      }
+      } else student.license = null;
       student.attributes = Student.getValidAttributes(student.attributes);
       student.current_method = student.lastInstruction[0] ? student.lastInstruction[0].met_name : "no_method";
       student.current_instruction = student.lastInstruction[0] ? student.lastInstruction[0].ins_name : "no_instruction";