Engine:
* Small tweaks to English and German locales
Frontend:
* Added a new default locale choice ("system default") that uses Qt's guessing to determine the preferred language
* Updated ts/qm files
file(GLOB txttrans2 ??.txt)
file(GLOB txttrans5 ?????.txt)
file(GLOB qmtrans hedgewars_*.qm)
install(FILES
${txttrans2}
${txttrans5}
${qmtrans}
DESTINATION ${SHAREPATH}Data/Locale)