Fix problem with not showing tooltips (#172)

Fixes #162, reintroduces a Chrome-Bug (#64 (comment)).

less/toolbox.less

@@ -10,11 +10,6 @@
       display: inline-block;
       padding-left: @g4u-desktop-padding;
       vertical-align: text-top;
-      overflow: hidden; // fixes chrome width bug
-
-      > .g4u-window-decorator { // fixes the window display bug resulting from above bugfix
-        position: static;
-      }
     }
 
     .g4u-toolbox-item-first {
@@ -48,4 +43,4 @@
       }
     }
   }
-}
+}