languages/classes/LanguageLa.php needs to be updated in order to allow correct declension of all Wikimedia project names (see la:Usor:UV/MediaWiki l10n/grammar for an overview that shows that the declension for "Vicidata" [= Wikidata] is currently wrong).

Here is what needs to be changed (sorry for not using Git/Gerrit, setting all this Git/Gerrit stuff up is way too much overhead for me to get this simple bug fixed):

change line 56
from
'/libri$/', '/nuntii$/', # 2nd declension plural (partly)
to
'/libri$/', '/nuntii$/', '/datae$/', # 2nd declension plural (partly)

change line 64
from
'librorum', 'nuntiorum',
to
'librorum', 'nuntiorum', 'datorum',

change line 75
from
'/libri$/', '/nuntii$/', # 2nd declension plural (partly)
to
'/libri$/', '/nuntii$/', '/datam$/', # 2nd declension plural (partly)

change line 83
from
'libros', 'nuntios',
to
'libros', 'nuntios', 'data',

change line 94
from
'/libri$/', '/nuntii$/', # 2nd declension plural (partly)
to
'/libri$/', '/nuntii$/', '/data$/', # 2nd declension plural (partly)

change line 102
from
'libris', 'nuntiis',
to
'libris', 'nuntiis', 'datis',

Thanks in advance!