Serbian translation fixes and updates
Just a minor fix, nothing urgent.
First of all, thank you very much for your work on the translation of DAVdroid to your language! It is very welcome and we're glad that you did it.
Nevertheless, in the recently released versions we've changed some things and dialogues. Could you please update your translation and push it at github that the translation is completely corresponding with latest version of DAVdroid? Also, there will always be changes to the code and text will be added. Can you maintain the translation in the future, too?
License stuff: Please write your name/nickname and copyright note in the text of the main dialogue at the bottom! Is it okay for you if your name is only mentioned in your own translation?
If you have questions, please just write back!
Sure, no problem, I intended to update it, but haven't got much time lately. Expect a pull request in a day or two.
Regarding name mentioning, I'm with whatever you decide.