Update translations from Transifex
Newly added languages: Esperanto (eo), Lithuanian (lt), Romanian (ro) and
Serbian (sr)
Many thanks to:
- cs: Vít Pelčák <vit@pelcak.org>
- de: ToBeFree <tobias@freiwuppertal.de>
- eo: cordata <tiffypet@yahoo.com>, <recoverybenk@gmail.com>
- es: Adolfo Jayme Barrientos <fitoschido@gmail.com>, enjolras <yo@miguelrevilla.com>
- fi: Larso <larso@gmx.com>, Lasse Liehu <lasse.liehu@gmail.com>
- lt: Liudas Alisauskas <liudas@akmc.lt>
- nb: sandsmark <sandsmark@samfundet.no>
- ro: Sergiu Bivol <sergiu@ase.md>
- ru: sfionov <fionov@gmail.com>
- sr: Jovan Jojkić <jovanjojkic@gmail.com>
- tr: Volkan Gezer <volkangezer@gmail.com>
- tr: zeugma <sunder67@hotmail.com>
- uk: Yuri Chornoivan <yurchor@ukr.net>
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