Makes control.js testable with various config. changes. Adds coverage for util.js, roles.js, starts on control.js. Updates the entrypoint; untested so far

jest.config.js

@@ -0,0 +1,19 @@
+module.exports = {
+  verbose: true,
+  moduleFileExtensions: ['js', 'jsx', 'json', 'node'],
+  moduleNameMapper: {
+    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
+      '<rootDir>/__mocks__/fileMock.js',
+    '\\.(css|less)$': 'identity-obj-proxy',
+    "^preact(/(.*)|$)": "preact$1"
+  },
+  testEnvironment: 'node',
+  transform: {
+    '^.+\\.jsx?$': 'babel-jest',
+  },
+  testPathIgnorePatterns: ['/node_modules/'],
+  coveragePathIgnorePatterns: ['/node_modules/'],
+  collectCoverage: true,
+  coverageReporters: ['json', 'lcov', 'text', 'clover'],
+  testEnvironment: 'jsdom'
+};