Add sample for app help tooltips

rootfs/standard/var/www/mynode/static/css/mynode.css

@@ -192,6 +192,13 @@ a:active {
     -moz-border-radius: 50%;
     -webkit-border-radius: 50%;
 }
+.app_tooltip {
+    width: 14px;
+    height: 14px;
+    position: absolute;
+    top: 5px;
+    left: 130px;
+}
 .app_logo {
     margin: auto;
     height: 55px;

rootfs/standard/var/www/mynode/templates/includes/apps.html

@@ -2,6 +2,10 @@
 <div class="app_tile_row">
     <div class="app_tile">
         <div class="app_status_icon {{ rtl_status_color }}"></div>
+        <!-- 
+            Sample Help Tooltip for each app
+            <img class="app_tooltip" src="{{ url_for('static', filename="images/help_icon.png")}}" title="RTL is a web app for managing your lightning wallet"/>
+        -->
         <div class="app_logo"><img class="app_logo_icon" src="{{ url_for('static', filename="images/rtl.png")}}"/></div>
         <div class="app_title">RTL</div>
         <div class="app_status">{% if not lnd_ready %}Waiting on LND...{% else %}{{ rtl_status }}{% endif %}</div>