Merge branch 'fix-dropdown-item-height' into 'master'

Fix dropdown line height

**Before**

![Screen_Shot_2016-03-28_at_5.54.37_PM](/uploads/67681da80b9104924083f13af3833553/Screen_Shot_2016-03-28_at_5.54.37_PM.png)

**After**

![Screen_Shot_2016-03-28_at_5.57.37_PM](/uploads/5df14c2d131cc88dbc75b87959f56c3c/Screen_Shot_2016-03-28_at_5.57.37_PM.png)


See merge request !3431

app/assets/stylesheets/framework/dropdowns.scss

@@ -117,7 +117,7 @@
     padding-left: 10px;
     padding-right: 10px;
     color: $dropdown-link-color;
-    line-height: 16px;
+    line-height: 34px;
     text-overflow: ellipsis;
     border-radius: 2px;
     white-space: nowrap;
@@ -136,6 +136,10 @@
         background-color: $dropdown-empty-row-bg;
       }
     }
+
+    &.dropdown-menu-user-link {
+      line-height: 16px;
+    }
   }
 }