trying to fix the hints by adam and mike and some smaller stuff

replaced inreplaces by pathname.install as suggested by adam
made both bbackupd and bbstored the default (it doesn't make sense to prefer one over the other as default)
omitted the html stuff, it just duplicates the manpages
made config dirs 700 since they will contain keys
made bbackupd use the standard plist method, as mike suggested. however, it's not nice, the caveat is wrong when --no-client is used. i'm not happy with that solution, ideas?