I am the plugin author for Admin Columns (https://wordpress.org/plugins/admin-columns/).
We have received a full Croatian translation by @drazen044. Since there hasn’t been an active GTE for Croatian for a while, I’d like to request that @drazen044 be added as a Project Translation Editor (PTE) for the #hr locale, so he can approve translations for this plugin.
Thank you!
See Support ticket: https://wordpress.org/support/topic/croatian-translation-6/