add reusable babycode editor

views/threads/create.etlua

@@ -9,8 +9,8 @@
       </select><br>
       <label for="title">Thread title</label>
       <input type="text" id="title" name="title" placeholder="Required" required>
-      <label for="initial_post">Post body</label>
-      <textarea id="initial_post" name="initial_post" placeholder="Required" rows=5 required></textarea>
+      <label for="initial_post">Post body</label><br>
+      <% render("views.common.babycode-editor-component", {ta_name = "initial_post"}) %>
       <% render "views.common.bbcode_help" %>
       <input type="submit" value="Create thread">
     </form>