Adding my account controller, setting up webview that loads to the divvy login page
Adding modal controller to enter credentials
Adding keychain utility classes, extensions, and keychain manager to handle saving username/password to the keychain
Resetting the keychain when the app is first run so credentials don't carry over
Copying username and password to the pasteboard when username and password buttons are tapped
Adding web control buttons to navigate back/forward and refresh the page
Adding text delegate methods for return key
Merge branch 'feature/myAccountScreen' into develop