Fix to allow angular base url

[jcesarmobile]

As we do on Capacitor, just serve the www folder so angular's base url works

[imhoffd]

@jcesarmobile This appears to redirect everything to index.html, is that correct? If so, can we have an html5mode option like in Android?

[jcesarmobile]

It shouldn't redirect everything to index.html. Did you faced that problem?

I've just updated to use startPage instead of index.html. That's for when the user loads "/" instead of a file.
Also when the url user tries to load is file:///blah/blah/blah/startPage, it will redirect to localhost:port/startPage, but just that one, the rest should redirect to localhost:port/otherfile