Update icon cache after installation
Update icon cache after installation

This will cause icons to work correctly immediately after installation
instead of requiring a user to log out and the back in.

See: https://fedoraproject.org/wiki/Packaging:Scriptlets#Icon_Cache

Aluxian/Facebook-Messenger-Desktop,Aluxian/Messenger-for-Desktop,Aluxian/Facebook-Messenger-Desktop,Aluxian/Facebook-Messenger-Desktop,Aluxian/Messenger-for-Desktop,Aluxian/Messenger-for-Desktop