Update the Autonym for 'cu'

Reported downstream in the Autonym repository:
https://github.com/santhoshtr/AutonymFont/issues/44
Merge pull request #121 from amire80/update-cu-autonym

Update the Autonym for 'cu'
Localisation updates from https://translatewiki.net.
Add the missing closing paranthesis for Chinese Simplified Han

See https://github.com/santhoshtr/AutonymFont/issues/52

Change-Id: I6759164bf8a3f19ebe6c00173b7097aabec8155b