Address a few minor review comments

poll/poll.py

@@ -179,11 +179,7 @@ class PollBase(XBlock, ResourceMixin, PublishEventMixin):
         """
         Checks to see if the user is permitted to vote. This may not be the case if they used up their max_submissions.
         """
-        if self.max_submissions == 0:
-            return True
-        if self.max_submissions > self.submissions_count:
-            return True
-        return False
+        return self.max_submissions == 0 or self.submissions_count < self.max_submissions
 
     def can_view_private_results(self):
         """
@@ -258,7 +254,7 @@ class PollBlock(PollBase):
         has made changes to the answers.
         """
         answers = dict(self.answers)
-        for key in answers.keys():
+        for key in answers:
             if key not in self.tally:
                 self.tally[key] = 0
 

poll/public/handlebars/poll_results.handlebars

@@ -5,7 +5,7 @@
     {{#each tally}}
         <li class="poll-result">
             <div class="poll-result-input-container">
-              <input id="answer-{{key}}" type="radio" disabled {{#if choice}}checked="True"{{/if}} />
+              <input id="answer-{{key}}" type="radio" disabled {{#if choice}}checked{{/if}} />
             </div>
             {{#if any_img}}
                 <div class="poll-image result-image">

poll/public/html/poll_edit.html

@@ -40,7 +40,7 @@
                 </select>
             </div>
             <span class="tip setting-help">
-                If this is set True, don't display results of the poll to the user.
+                If this is set to True, don't display results of the poll to the user.
             </span>
         </li>
         <li class="field comp-setting-entry is-set">