Makefile now accept make help and make uninstall (which uninstalls from the official locations if nothing else is specific. also Makefile now uses MANDIR var

now when we do make, it compiles py files to pyo and make install install pyo files instead of py files

gajim.sh --> gajim.py, adding psyco support if available, small fix in new message dialog if @ is not given

ImageCellRenderer has now better name, gajim.py --> gajim.sh [needs fix to makefile to make it work, padding and xalign trying to clean up (don't work yet). added a fixme in new message dialog about focus problems..