Added Long Rebate form

[TRISHANT131104]

Tasks To be done:

1. Add long rebate form ✓
2. Add caterer name in short rebate in admin page
3. Combine all 3 caterer and put name, phone number and image
4. In contact put image column also for everyone including dining warden staff, gs, horc, committee
5. Remove individual tabs for caterer menu and keep a single tab for menu
6. Review mistakes in Long and short rebate
7. removing google form in short rebate page ✓

[mittal-ishaan]

lets do the rest of the tasks in a new PR

1. Add caterer name in short rebate in admin page
2. Combine all 3 caterer and put name, phone number and image
3. In contact put image column also for everyone including dining warden staff, gs, horc, committee
4. Remove individual tabs for caterer menu and keep a single tab for menu
5. Review mistakes in Long and short rebate