Rename Server LED files

The menu item is called "Server LED".
The title is called "Server LED".
The route is server-control/server-led.

Tested: Verified server LED still works.
Change-Id: I1c70cfb6cd36868a191aa51363437dcdcc6d9a6b
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/app/server-control/styles/index.scss b/app/server-control/styles/index.scss
index d469ecf..cc69a87 100644
--- a/app/server-control/styles/index.scss
+++ b/app/server-control/styles/index.scss
@@ -1,4 +1,4 @@
 @import "./bmc-reboot.scss";
 @import "./power-operations.scss";
 @import "./remote-console.scss";
-@import "./unit-id.scss";
+@import "./server-led.scss";