Backend linkages

[parth-io]

• [x] Add routes to edit org
• [x] Show both user name and org name, instead of just user name
• [x] Add igHead to userOnOrg
• [x] Fetch categories and venues from backend to respective pages
• [x] Timezone issue check --> bookings/all endpoint returns bookings for one day for GMT+8 <-- because URL query params are in GMT+0, but display in GMT+8