Fix feedback options not updating in exam view

This is a sub-optimal fix, could be adjusted later on.

client/views/Exam.jsx

@@ -19,6 +19,8 @@ class Exams extends React.Component {
   state = {
     examID: null,
     page: 0,
+    editActive: false,
+    feedbackToEdit: null,
     numPages: null,
     selectedWidgetId: null,
     changedWidgetId: null,
@@ -54,8 +56,11 @@ class Exams extends React.Component {
         previewing: false
       }
     }
-
-    return null
+      // This is a rough update for when feedback is edited.
+    newProps.exam.problems.forEach(problem => {
+      prevState.widgets[problem.widget.id].problem.feedback = problem.feedback
+    })
+    return prevState
   }
 
   componentDidUpdate = (prevProps, prevState) => {
@@ -286,6 +291,8 @@ class Exams extends React.Component {
 
   PanelEdit = (props) => {
     const selectedWidgetId = this.state.selectedWidgetId
+    let selectedWidget = selectedWidgetId && this.state.widgets[selectedWidgetId]
+    let problem = selectedWidget && selectedWidget.problem
 
     return (
       <nav className='panel'>
@@ -315,15 +322,12 @@ class Exams extends React.Component {
                     }} />
 
                   {this.state.editActive
-                    ? <EditPanel problemID={props.problem.id} feedback={this.state.feedbackToEdit}
+                    ? <EditPanel problemID={problem.id} feedback={this.state.feedbackToEdit}
                       goBack={this.backToFeedback} />
-                    : <FeedbackPanel examID={this.props.examID} problem={props.problem}
+                    : <FeedbackPanel examID={this.props.examID} problem={problem}
                       editFeedback={this.editFeedback} showTooltips={this.state.showTooltips}
-                      grading={false} updateSubmission={() => {
-                        this.props.updateSubmission(this.state.sIndex)
-                      }
-                      } />}
-                  {console.log(props.problem)}
+                      grading={false}
+                    />}
                 </div>
               </React.Fragment>
             )}