fix(clientsidescripts): findElements and isElementPresent for protractor.By.select
docs(configuration): make the roll of seleniumAddress clear

Makes seleniumAddress null by default in the reference configuration, which
prevents odd error messages being the fist thing you see if you just install
selenium and then run tests against the reference config.
fix(sync): getCurrentUrl and friends should sync with Angular first

getCurrentUrl, getPageSource, and getTitle should sync with Angular
before executing. Closes #92.