Partial commit, I have a bit of a mess here...
Agenda updates
Fix loading of AAPL data in get_two_stock_data()
update figs for basemap example
update basemap examples for version 0.9.8
Minor spelling corrections.
Added mathtext column to backends comparison table.
Fix mathtext in example.
Updated some statuses on the goals page.
Lots of updates to bring the website inline with 0.91.1