Upgrade jest to 22 (#4782)

* chore: upgrade Jest

* chore: update snapshots

* chore: lock down babel dependency using invalid syntax

* 2 args to test.skip

* use jest 22 for now

* Revert "2 args to test.skip"

This reverts commit 691fdc3f99e320f2303958f2b503f7b4c93fa455.

* remove snapshot name from matcher

* fix standalone tests skips

tests/flow/node_tests/basic_node_modules/__snapshots__/jsfmt.spec.js.snap

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`foo.js 1`] = `
+exports[`foo.js - flow-verify 1`] = `
 var x = require('bar.js');
 console.log(x);
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~