migrated to QT5

Ignore-this: d49f84a0e48d0094e46b73709262276e

darcs-hash:20130627034340-c21fe-9d24b079adb99a82279e9e734db39ebeb96c084b
added install targets

Ignore-this: a8f37817ed1f723b7126819a312b5b86

darcs-hash:20130627034458-c21fe-1302fe3e10f78cd23ceb34e81dcd27755975126c