Replace the local API with fixtures
Now loading fixtures from JSON files according to the requested URL. This happens in FixtureClient which replaces the normal cURL client in the buzz browser.
Also removed set up of local instance of the api in Travis CI configuration.
Also added try/catch statements around every API call in TransportTest to let tests fail whose fixtures are not present.
Add comments to try/catch blocks around API calls
Also add another try/catch block that was missed in the last commit
Minor beautifications in coding style
According to phpcs and Symfony2 coding standards.
Also eliminated else-block in sanatizeParameters and replaced isset() with empty()