Web page title from config doesn't appear until responsive webapp component updates

[landonreed]

When loading the OTP web app in a browser, there is a moment where the original page title is visible before it is overridden in responsive webapp:

otp-react-redux/lib/components/app/responsive-webapp.js

Lines 29 to 31 in 21348d3

	componentDidUpdate (prevProps) {
	const { currentPosition, location, query, title } = this.props
	document.title = title

This was observed in the 511NY trip planner using the trimet-mod-otp library (see https://dz88fe1xr6gid.cloudfront.net/#/, where page title flashes a non-NY title before changing).

It appears that we need to update the page title in the constructor method as well.