<refactor> Refactor the error handler.
Clean up the code a little bit.
<style> Fix layout of the summary part.
<feat> Add tabs.
<feat> Tabs and totalCost are functional.
Merge branch 'dev' of https://github.com/XchangeCoop/lunchbox into dev
merge.
Merge branch 'dev' of https://github.com/XchangeCoop/lunchbox into dev
<feat> Multiple order is almost funcional.
Merge branch 'dev' of https://github.com/XchangeCoop/lunchbox into dev
merge in multiple order.
<style> style <a> tags.
<fix> assign orders.email and orders.phone to order.email and order.phone.