(bug 36819) Lowercase be,csb,cu,dsb,hsb,rue,sgs,szl
Follow up to gerrit change 7306:
https://gerrit.wikimedia.org/r/#/c/7306/
Lowercase some Central and Eastern European language
names (mostly Slavic and Samogitian, using lithuanian
rule).
'be-tarask' => "беларуская (тарашкевіца)", # Belarusian in Taraskievica orthography
(as well as be-x-old)
'csb' => 'kaszëbsczi', # Cassubian
'cu' => 'словѣ́ньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ', # Old Church Slavonic (ancient language)
'dsb' => 'dolnoserbski', # Lower Sorbian
'hsb' => 'hornjoserbsce', # Upper Sorbian
'rue' => 'русиньскый', # Rusyn
'sgs' => 'žemaitėška', # Samogitian
'szl' => 'ślůnski', # Silesian
Change-Id: Ic0420299c9010f62d2a8fbfd6cb1d65c6b4b8413