Disable settings "Apply" button when no changes have been made

Summary: It's a bit nicer to be able to see if there are any changes made, and save restarting flipper when nothing has changed.

Reviewed By: passy

Differential Revision: D17738036

fbshipit-source-id: 3d7cdc5be1bf948094c3df54439625e5052a9a2f

yarn.lock

@@ -1172,6 +1172,13 @@
   dependencies:
     "@types/lodash" "*"
 
+"@types/lodash.isequal@^4.5.5":
+  version "4.5.5"
+  resolved "https://registry.yarnpkg.com/@types/lodash.isequal/-/lodash.isequal-4.5.5.tgz#4fed1b1b00bef79e305de0352d797e9bb816c8ff"
+  integrity sha512-4IKbinG7MGP131wRfceK6W4E/Qt3qssEFLF30LnJbjYiSfHGGRU/Io8YxXrZX109ir+iDETC8hw8QsDijukUVg==
+  dependencies:
+    "@types/lodash" "*"
+
 "@types/lodash@*":
   version "4.14.136"
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.136.tgz#413e85089046b865d960c9ff1d400e04c31ab60f"
@@ -5942,6 +5949,11 @@ lodash.debounce@^4.0.8:
   resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
   integrity sha1-gteb/zCmfEAF/9XiUVMArZyk168=
 
+lodash.isequal@^4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
+  integrity sha1-QVxEePK8wwEgwizhDtMib30+GOA=
+
 lodash.isplainobject@^4.0.6:
   version "4.0.6"
   resolved "https://registry.yarnpkg.com/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz#7c526a52d89b45c45cc690b88163be0497f550cb"