feat(widgets): pricing/FAQ/stats + forum topic list and bbs sidebars

Add zibll produck widgets (pricing plans, FAQ, stats), forum topic
lists, register bbs_* sidebar zones, and wire plate/topic/home/compose
templates to render those widget areas.

templates/forum/forum-compose.php

@@ -436,6 +436,19 @@ $initial_content = $draft_data ? $draft_data['content'] : '';
                     </div>
                 </div>
 
+            <?php if (is_active_sidebar('bbs_new_posts_sidebar_top') || is_active_sidebar('bbs_new_posts_sidebar_bottom')) : ?>
+                <div class="aksrt-forum-widget-zone">
+                    <?php
+                    if (is_active_sidebar('bbs_new_posts_sidebar_top')) {
+                        dynamic_sidebar('bbs_new_posts_sidebar_top');
+                    }
+                    if (is_active_sidebar('bbs_new_posts_sidebar_bottom')) {
+                        dynamic_sidebar('bbs_new_posts_sidebar_bottom');
+                    }
+                    ?>
+                </div>
+                <?php endif; ?>
+
             </div><!-- /.aksrt-forum-compose__sidebar -->
         </form>
     </div>