removed unneeeded console.log
fixed shipping display update on cart
be sure to show product image in detail pages even without a description, fixes #25
conditionally enable and disable isotope based on window width, fixes #27
account for ludicrously long product titles in the mobile cart, fixes #30
style them errors, fixes #31
adjust heights for mobile panes so nav pane doesn't ever peek through, fixes #32, fixes #37, fixes #39