change video save api and data migration for modifying partner
Merge pull request #298 from digitalgreenorg/master_partner_modify

change video save api and data migration for modifying partner
using video uploaded in digitalgreen account
Adding Agenda for Delhi workshop
writing registrations to a spreadsheet
Merge pull request #299 from digitalgreenorg/master_event_drive

writing registrations to a spreadsheet
Merge branch 'master' into master_collection_add_page
migration renamed
m2m connect functions removed and added in api.py
imports reordered in post_save_funcs