reset route on checkout to find out who is checking out before asking for address
Sign up and sign in redirects to addresses index during checkout, also created a form for entering new address in checkout
Merge pull request #24 from Adam89/helper_tests

Helper tests
updated capybara tests for signup and sign in during checkout
fixed transaction#show method to work for guests
completed guest checkout capybara test minus javascript
Moved order total method to application controller from order helper to give transaction confirmation page access to the method
replaced categories
fixed category test item test
Moved order total method from application controller to application helper and included application helper in application controller
fixed #load category in items controller
Merge branch 'master' into mybranch
fixed menu test category sorting
fixed view by categories test
Superficial change in application helper test
setup sendgrid and added transactions notifier class
Merge branch 'master' into send_grid