Make allow_anonymous and allow_anonymous_to_peers use field access in templates

lms/templates/discussion/_inline_new_post.html

@@ -7,15 +7,15 @@
                 <div class="options">
                     <input type="checkbox" name="follow" class="discussion-follow" class="discussion-follow" id="new-post-follow" checked><label for="new-post-follow">follow this post</label>
                     <br>
-                    % if course.metadata.get("allow_anonymous", True):
+                    % if course.allow_anonymous:
                         <input type="checkbox" name="anonymous" class="discussion-anonymous" id="new-post-anonymous"><label for="new-post-anonymous">post anonymously</label>
-                    %elif course.metadata.get("allow_anonymous_to_peers", False):
+                    %elif course.allow_anonymous_to_peers:
                         <input type="checkbox" name="anonymous_to_peers" class="discussion-anonymous-to-peers" id="new-post-anonymous-to-peers"><label for="new-post-anonymous-to-peers">post anonymously to classmates</label>
                     %endif
                     %if is_course_cohorted:
                     <div class="form-group-label choose-cohort">
                         Make visible to:
-                        <select class="group-filter-select new-post-group" name = "group_id"> 
+                        <select class="group-filter-select new-post-group" name = "group_id">
                             <option value="">All Groups</option>
                             %if is_moderator:
                               %for c in cohorts:

lms/templates/discussion/_new_post.html

@@ -23,7 +23,7 @@
 
 
 <article class="new-post-article">
-    <div class="inner-wrapper">        
+    <div class="inner-wrapper">
         <form class="new-post-form">
             <div class="left-column">
                 <label>Create new post about:</label>
@@ -41,18 +41,18 @@
                 <div class="options">
                     <input type="checkbox" name="follow" class="discussion-follow" class="discussion-follow" id="new-post-follow" checked><label for="new-post-follow">follow this post</label>
                     <br>
-                    % if course.metadata.get("allow_anonymous", True):
+                    % if course.allow_anonymous:
                         <input type="checkbox" name="anonymous" class="discussion-anonymous" id="new-post-anonymous"><label for="new-post-anonymous">post anonymously</label>
-                    %elif course.metadata.get("allow_anonymous_to_peers", False):
+                    %elif course.allow_anonymous_to_peers:
                         <input type="checkbox" name="anonymous_to_peers" class="discussion-anonymous-to-peers" id="new-post-anonymous-to-peers"><label for="new-post-anonymous-to-peers">post anonymously to classmates</label>
                     %endif
                     %if is_course_cohorted and is_moderator:
                     <div class="form-group-label choose-cohort">
                         Make visible to:
-                        <select class="group-filter-select new-post-group" name = "group_id"> 
+                        <select class="group-filter-select new-post-group" name = "group_id">
                             <option value="">All Groups</option>
                             %for c in cohorts:
-                                <option value="${c.id}" 
+                                <option value="${c.id}"
                                 %if user_cohort and str(user_cohort) == str(c.id):
                                     selected
                                 %endif