Merge branch 'prepare-1.2.1' into 'master'

Release v1.2.1

See merge request arsnova/arsnova-lite!278

CHANGELOG.md

 # Changelog
 
+## 1.2.1
+Bug Fixes:
+* Fix icons in room view for both roles
+
+**This version is brought to you by:**  
+Project management: Klaus Quibeldey-Cirkel  
+Lead programming: Tom "tekay" Käsler, Lukas Mauß  
+
 ## 1.2
 Features:  
 * Adds a counter for the comments