NextCloud

[bob5ec]

• [x] get test account for free
• [x] test ical sync
• [x] test icard sync
• [x] test sogo Export -> NextCloud import
  • https://github.com/nextcloud/contacts/issues/1134
• [x] decide on size 100GB is way more we need
• [x] create accounts
• [x] migrate ihm users
  • [x] sync SoGo -> nextcloud
  • [x] setup mobiles
• [x] delete test account (data)