Change how locale is loaded in frontend, and fix some bugs
- Fix some loading errors when locale is C
- Fallback mission map description to English
if(WIN32 AND NOT UNIX) file(GLOB DLLs *.dll) file(GLOB ICOs *.ico) install(FILES ${DLLs} ${ICOs} DESTINATION ${target_library_install_dir})endif(WIN32 AND NOT UNIX)