Add budgeting system

[haylinmoore]

• [x] Display budget on frontend projects page
• [x] Display budget on create page
• [x] Display proper error on creation for exceeding budget
• [x] Limit based on budget
• [x] Add way for admins to alter project budget
• [x] Return budget usage on /projects
• [x] Create new projects with budget
• [x] Handle projects without budget in database

[haylinmoore]

This has been thoroughly tested in a local development environment. Rolling out to production now