Added Orders page and Controller, minor tweaks to templates

...u/drexel/TrainDemo/controllers/sales/OrderController.java

src/main/resources/application.properties

src/main/resources/templates/admin/dashboard.html

src/main/resources/templates/cart.html

src/main/resources/templates/cart/checkout.html

src/main/resources/templates/orders.html

src/main/resources/templates/user/addresses.html

src/main/resources/templates/user/dashboard.html

src/main/resources/templates/user/orders.html