Update git submodules

* Update plugins/plugin-manager from branch 'master'
  to ed7870eb3c8b6e48511d0eb3bd54606927b46019
  - Add support for just UI plugins (JS)
    
    Change-Id: Ie0e466cf52606c1eaa4f793fd314db3cb20dc869
    
diff --git a/plugins/plugin-manager b/plugins/plugin-manager
index 86f7ec6..ed7870e 160000
--- a/plugins/plugin-manager
+++ b/plugins/plugin-manager
@@ -1 +1 @@
-Subproject commit 86f7ec61a9785df246f653a1336520b9607399b1
+Subproject commit ed7870eb3c8b6e48511d0eb3bd54606927b46019