make prints compatible with py3, command: 2to3-2.7 -w -f print .
change sort(cmp=...) to sort(key=...) to be compatible with py3
fix print in pray_times.py
fix app_info.py for py3 and gtk3
port pray_times plugin to py3 and gtk3
fix raise for py3
fix "except" to be compatible with py3
changes for compatibility with py3 branch
merge branch next