Merge branch '175-announce-teach-conference' into 'master'

Resolve "Announce TEACH conference"

Closes #175

See merge request !347

_events/2021/12/2021-12-07-teach.md

+---
+title: "TEACH Conference"
+layout: event
+organizers:
+  - HIFIS
+  - HIDA
+  - HMC
+  - Helmholtz Open Science Office
+  - Helmholtz Talent Management
+type: conference
+start:
+  date:   "2021-12-07"
+  time:   "09:30"
+end:
+  date:   "2021-12-10"
+  time:   "11:30"
+location:
+  campus: "Online"
+excerpt:  "A conference on education across all communities in Helmholtz - free for all!"
+registration_period:
+  from:   "2021-11-30"
+  to:     "2021-12-10"
+registration_link:  "https://events.hifis.net/event/164/"
+fully_booked_out:  "False"
+---
+
+## Let's TEACH
+
+We invite you to join our first conference on education in Helmholtz.
+A wide range of talks, discussions and workshops awaits you on a broad spectrum of education-related offers.
+Check out the [full information and timetable](https://events.hifis.net/event/164/timetable/#20211207.detailed) here. 
+Pick out the events that interest you and join us anytime!