Added tests for helpers and components. All react components are now ES5.

tests/helpers/changeExtensionState.spec.js

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+var chai = require('chai');
+var expect = chai.expect;
+
+import changeExtensionState from '../../assets/js/helpers/changeExtensionState';
+
+describe('changeExtensionState', function() {
+    it('should be a function', function() {
+        expect(changeExtensionState).to.be.a('function');
+    });
+});

tests/helpers/changeExtensionTooltip.spec.js

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+var chai = require('chai');
+var expect = chai.expect;
+
+import changeExtensionTooltip from '../../assets/js/helpers/changeExtensionTooltip';
+
+describe('changeExtensionTooltip', function() {
+    it('should be a function', function() {
+        expect(changeExtensionTooltip).to.be.a('function');
+    });
+});

tests/helpers/getDomainFromUrl.spec.js

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+var chai = require('chai');
+var expect = chai.expect;
+
+import getDomainFromUrl from '../../assets/js/helpers/getDomainFromUrl';
+
+describe('getDomainFromUrl', function() {
+    it('should be a function', function() {
+        expect(getDomainFromUrl).to.be.a('function');
+    });
+});

tests/helpers/in_array.spec.js

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+var chai = require('chai');
+var expect = chai.expect;
+
+import in_array from '../../assets/js/helpers/in_array';
+
+describe('in_array', function() {
+    it('should be a function', function() {
+        expect(in_array).to.be.a('function');
+    });
+});