reduced dashboard title font-weight

src/css/less/navbar.less

@@ -63,7 +63,6 @@
   margin: 9px 18px 5px 14px;
   border-radius: 3px;
   font-size: 1.4em;
-  font-weight: bold;
   color: #a2a2a2;
   border: @grafanaTriggerBorder;
   a {
@@ -111,7 +110,6 @@
 
 .top-nav-title {
   padding: 0px 6px 5px 5px;
-  font-weight: bold;
   color: #FFFFFF;
   font-size: 17px;
 }