fix font inheritance, update post control styles

lms/static/coffee/src/discussion.coffee

@@ -64,8 +64,10 @@ Discussion =
       <input type="text" class="thread-title-edit title-input" placeholder="Title" value="{{title}}"/>
       <div class="thread-body-edit body-input">{{body}}</div>
       <input class="thread-tags-edit" placeholder="Tags" value="{{tags}}" />
-      <a class="discussion-submit-update control-button" href="javascript:void(0)">Update</a>
-      <a class="discussion-cancel-update control-button" href="javascript:void(0)">Cancel</a>
+      <div class = "edit-post-control">
+        <a class="discussion-cancel-update" href="javascript:void(0)">Cancel</a>
+        <a class="discussion-submit-update control-button" href="javascript:void(0)">Update</a>
+      </div>
     </form>
   """
 
@@ -323,8 +325,9 @@ Discussion =
           autocomplete:
             remoteDataType: 'json'
           interactive: true
-          defaultText: ""
+          defaultText: "Tag your post: press enter after each tag"
           height: "30px"
+          width: "90%"
           removeWithBackspace: true
         $local(".discussion-submit-update").unbind("click").click -> handleSubmitEditThread(this)
         $local(".discussion-cancel-update").unbind("click").click -> handleCancelEdit(this)

lms/static/sass/_discussion.scss

@@ -42,6 +42,8 @@ $discussion_input_width: 90%;
       @include discussion-font;
     }
     .search-input {
+      font: inherit;
+      font-style: normal;
       float: left;
       width: 72%;
     }
@@ -49,6 +51,10 @@ $discussion_input_width: 90%;
       display: block;
       margin-top: flex-gutter();
     }
+    .discussion-search-within-board {
+      font-style: normal;
+      font: inherit;
+    }
   }
   .control-button {
     @include button;
@@ -117,7 +123,8 @@ $discussion_input_width: 90%;
   }
   .new-post-form, .discussion-thread-edit{
     .title-input, .body-input {
-      @include discussion-font;
+      font-style: normal;
+      font: inherit;
       display: block !important;
       width: $discussion_input_width !important;
     }
@@ -149,7 +156,7 @@ $discussion_input_width: 90%;
     }
   }
   .discussion-content-edit, .discussion-reply-new, .new-post-form {
-    .new-post-control {
+    .new-post-control, .edit-post-control {
       margin-left: 70.5%;
       margin-top: 1%;
     }
@@ -288,12 +295,12 @@ $discussion_input_width: 90%;
   width: 100%;
   background-color: Gainsboro;
   border: 1px solid DarkGray;
-  font-style: normal;
+  font: inherit;
 }
 
 .wmd-preview 
 { 
-  background-color: #c0e0ff; 
+  background-color: #c0e0ff;
 }
 
 .wmd-button-row 

lms/templates/discussion/search_bar.html

@@ -10,6 +10,6 @@ def url_for_search():
   <div class="discussion-link" href="javascript:void(0)">Search posts</div>
   <div class="search-within">
     <input type="checkbox" id="discussion-search-within-board-${discussion_id}" class="discussion-search-within-board" checked/>
-    <label for="discussion-search-within-board-${discussion_id}">Search within board</label>
+    <label for="discussion-search-within-board-${discussion_id}" class="discussion-search-within-board">Search within board</label>
   </div>
 </form>