Update file Changelog.md

Changelog.md

@@ -32,11 +32,19 @@ Some of the logged changes might apply to Features that will be unlocked in the
   ##### General
   Master Version 20.5
   
+  - Our Development Platform moved to Git.NRW. The external issue-board and public documentation will remain available on the old platform for a little longer.
+  - There will be less automatic mails sent to the HPC mail adress on short-term resource increase 
+
   ##### Applications
+  - PC2 applications: 
+      - Lowered the CPU ressource limit to 0.2 mio core-h per year (was 4 mio core-h per year)
+      - Small text adjustments
+
   ##### Reviews
+  - NHR Jards: Added Terms & Conditions to be agreed to before logging into the review pages
+
   ##### Projects
-  ##### API
-  ##### Hotfixes released during the last cycle
+  - Fixed an issue where Extended search results were not visible on small monitors/window sizes
 
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