Fix index page for files/ott, fix api host for D3 tree views

@kcranston, @jar398: Fixes to **files.opentreeoflife.org** (API hostnames for viz pages, and updates to taxonomy page). Also note a minor change to Apache vhost configuration at the very bottom.

Conflicts:
	deploy/files.opentreeoflife.org/other/synth_viz_dyn.html
	deploy/files.opentreeoflife.org/other/taxa_viz_dyn.html