new headers

external/exchange-channels/calendar/exchange-calendar.md

+---
+layout: page
+permalink: /external/exchange-channels/calendar/
+shortcut: exchange-channels:calendar
+redirect_from:
+  - /cards/exchange-channels:calendar
+  - /internal/cards/exchange-channels:calendar
+---
 # Sharing calendar in Microsoft Exchange
 
 If you don't want to be overwhelmed by doodle polls and multiple rescheduling of meetings, you can share your calendar with your collaborators so they can see when you are busy.

external/exchange-channels/duma/duma.md

+---
+layout: page
+permalink: /external/exchange-channels/duma/
+shortcut: exchange-channels:duma
+redirect_from:
+  - /cards/exchange-channels:duma
+  - /internal/cards/exchange-channels:duma
+---
 # AsperaWEB Quick Guide
 
 {:toc}

external/exchange-channels/owncloud/owncloud.md

+---
+layout: page
+permalink: /external/exchange-channels/owncloud/
+shortcut: exchange-channels:owncloud
+redirect_from:
+  - /cards/exchange-channels:owncloud
+  - /internal/cards/exchange-channels:owncloud
+---
 # Owncloud Quickguide
 
 **LCSB ownCloud**  is a private cloud storage service for the use of LCSB staff and collaborators. It is suitable for exchanging small-sized files (up to 1-2 gigabyte). All communication with the LCSB ownCloud server is SSL encrypted.