improve less formating - part 2 (template area and base modules)

- remove @author from comments
- adjust the spacing

css/area_main-sidebar-tabs.less

@@ -1,3 +1,8 @@
+/**
+ * This file provides the design styles for tab list in sidebar
+ */
+
+/* default view */
 #dokuwiki__aside ul.sidebar-tabs {
     margin-top: 0;
     margin-bottom: @nav-margin;
@@ -22,6 +27,7 @@
     }
 }
 
+/* wide content view */
 .wide-content #dokuwiki__aside ul.sidebar-tabs {
     visibility: hidden;
 }