rename old Serbian translation file
add Serbian Cyrillic translation file
enable Serbian Cyrillic translation
fix for https://gramps-project.org/bugs/view.php?id=6355.

  Craig A.
czech translation update
Merge branch 'master' of ssh://git.code.sf.net/p/gramps/source
8122: DB lock not checked when opening database from the recent opened trees
Serbian should be ready for Windows OS and LOCALE_NAMES mapping
neaten language list in setup.py