show empty warning properly when SideNav folded

Rokt33r · Rokt33r · commit be2897806abf · 2016-05-14T12:26:11.000+09:00
diff --git a/browser/main/SideNav/SideNav.styl b/browser/main/SideNav/SideNav.styl
@@ -75,6 +75,9 @@
 .root-folded
   @extend .root
   width 44px
+  .repositoryList-empty
+    white-space nowrap
+    transform rotate(90deg)
   .top-menu
     width 44px
     text-align center
