I added almost 30 translations relating to access codes about a month ago through the Translate interface, but haven't seen any action about them in the source code. Could one of the development team please take a look? 
translate.limesurvey.org/projects/limesu...in%5D=superuser_does

I mention this especially because a lot of translations have been getting merged in the same period of time:  github.com/LimeSurvey/LimeSurvey/commits/master/locale

Thanks.

Frist of all: Thank you for contributing to the translations. This is very valuable for the Limesurvey community.

However, the translations highly depend on us volunteers (I am helping with the Brazilian Portuguese translations so I know that it is some effort).

Regarding the translations not being added: This has most probably to do with the supervisor for the greek translations (most probably a volunteer too), did not approve them yet.

Looking at the translation status here translate.limesurvey.org/projects/limesurvey-7/

My guess is that there is no one to approve the translations and hasn't been for quite a while as there are only 59% translated.

Maybe write to the email provided here: www.limesurvey.org/manual/Translating_LimeSurvey