MediaWiki:Tux-empty-list-other-guide
Messages MediaWiki:Tux-empty-list-other-guide (You can help review existing translations) and MediaWiki:Tux-empty-you-can-help-providing (You can help providing new translations) are IMO missing a period in the end. Similar MediaWiki:Tux-empty-you-can-review-already-proofread (You can review translations already reviewed by others.) has it, though. Can that period be added there and other similar messages checked for this too? Thanks.
Lokal Profil is the one with freshest memory of this interface, I suggest that he submits patches. :D
I'm not sure, looking at [1] the previous line Tux-empty-list-other ("Nothing to translate
") does not have a full stop nor does the group description Translate-group-desc-wikimedia-mobile (page does not exist) (at least this one). From this I would say that the messages shouldn't have a full stop... but I'm not comfortable enough with punctuation grammar (in either English or Swedish) to decide on this one.
I'll happily submit a patch if you think I'm wrong though. In this case I guess the group description(s) should probably also be given full stops.