Create routes

[eilismcmillan]

• view all bills
• view bills by category
• view bills by subcategory
• edit bills
• create bills
• delete bill
• create category
• create subcategory
• user - login/logout

[eilismcmillan]

Lior: view all bills, categories, subcategories Karra: create bills, categories, subcategories (complete) Josh: edit bills (complete) Eilis: user