add quick navigation within the listing-float

tests/tmp_mocha_jump/test/one.test.js

@@ -0,0 +1,4 @@
+describe("suite one", function() {
+  it("test one", function() {
+  })
+})

tests/tmp_mocha_jump/test/two.test.js

@@ -0,0 +1,4 @@
+describe("suite two", function() {
+  it("test two", function() {
+  })
+})