make a bunch customizability in LTI modules

common/lib/xmodule/xmodule/lti_module.py

@@ -191,6 +191,21 @@ class LTIFields(object):
         default=False,
         scope=Scope.settings
     )
+    title_postscript = String(
+        display_name="Post-script to component title",
+        default="(External Resource)",
+        scope=Scope.settings
+    )
+    grader_feedback_label = String(
+        display_name="String label for grader feedback",
+        default="Feedback on your work from the grader:",
+        scope=Scope.settings
+    )
+    instruction_text = String(
+        display_name="Additional instruction text for component",
+        default="",
+        scope=Scope.settings
+    )
 
 
 class LTIModule(LTIFields, LTI20ModuleMixin, XModule):
@@ -370,6 +385,9 @@ class LTIModule(LTIFields, LTI20ModuleMixin, XModule):
             'weight': self.weight,
             'module_score': self.module_score,
             'comment': sanitized_comment,
+            'title_postscript': self.title_postscript,
+            'grader_feedback_label': self.grader_feedback_label,
+            'instruction_text': self.instruction_text,
         }
 
     def get_html(self):

lms/static/sass/course/courseware/_courseware.scss

@@ -327,3 +327,7 @@ section.foldit {
   border-radius: 5px;
   font-weight: bold;
 }
+
+h4.problem-feedback-label{
+  margin-top: 1em;
+}
\ No newline at end of file

lms/templates/lti.html

@@ -3,7 +3,7 @@
 
 <h2 class="problem-header">
     ## Translators:  "External resource" means that this learning module is hosted on a platform external to the edX LMS
-    ${display_name} (${_('External resource')})
+    ${display_name} ${title_postscript}
 </h2>
 
 % if has_score and weight:
@@ -22,7 +22,10 @@
     id="${element_id}"
     class="${element_class}"
 >
-
+  <div class="problem-instruction">
+      ${instruction_text}
+  </div>
+  </div>
 % if launch_url and launch_url !=  'http://www.example.com' and not hide_launch:
     % if open_in_a_new_page:
         <div class="wrapper-lti-link">
@@ -46,7 +49,9 @@
 %endif
 
 % if has_score and comment:
-    <h4 class="problem-feedback-label">${_("Feedback on your work from the grader:")}</h4>
+    % if grader_feedback_label:
+        <h4 class="problem-feedback-label">${grader_feedback_label}</h4>
+    % endif
     <div class="problem-feedback">
         ## sanitized with bleach in view
         ${comment}