Missed a spot with the date column for group bans

I'm thinking of putting a setting here instead of hardcoding the date format, actually, but for now this is good enough.
Update spanish translations to reflect a lot of changes and adds in last Alphas builds.
Merge remote-tracking branch 'Liru/master'
Spanish translation pruning, also Manage ban list translation by Damian.
System preferences and Menu translation updates by Nomade Zhao.
Cinder made some logic enhancements to hippogridmanager.cpp, I've picked them up~
Merge remote-tracking branch 'upstream/master'
Changes to image meta data reader
Delete All Owned Objects