rspamd: use connection properties vs plugin data
rspamd: use connection properties vs plugin data

as connection properties are much more likely to exist.

* if no fcrdns plugin, get hostname from connection.remote_host
* get helo from connection.remote_host (vs helo.checks)
* convert rcpt_to objects to email addresses
* set Deliver-To for single-recipient transactions
* add scan timer
* include urls, emails, and messages which might be present in reply (edit
  config/results.ini to control which are logged)

haraka/Haraka,jjz/Haraka,MignonCornet/Haraka,fatalbanana/Haraka,Dexus/Haraka,DarkSorrow/Haraka,slattery/Haraka,MignonCornet/Haraka,smfreegard/Haraka,fatalbanana/Haraka,slattery/Haraka,MignonCornet/Haraka,typingArtist/Haraka,jjz/Haraka,Dexus/Haraka,smfreegard/Haraka,jaredj/Haraka,DarkSorrow/Haraka,Dexus/Haraka,hatsebutz/Haraka,msimerson/Haraka,typingArtist/Haraka,danucalovj/Haraka,smfreegard/Haraka,craigslist/Haraka,baudehlo/Haraka,danucalovj/Haraka,DarkSorrow/Haraka,smfreegard/Haraka,typingArtist/Haraka,AbhilashSrivastava/haraka_sniffer,haraka/Haraka,jaredj/Haraka,zombified/Haraka,bsmr-x-script/Haraka,bsmr-x-script/Haraka,jjz/Haraka,danucalovj/Haraka,hatsebutz/Haraka,msimerson/Haraka,fatalbanana/Haraka,craigslist/Haraka,bsmr-x-script/Haraka,baudehlo/Haraka,jaredj/Haraka,jjz/Haraka,haraka/Haraka,bsmr-x-script/Haraka,baudehlo/Haraka,AbhilashSrivastava/haraka_sniffer,msimerson/Haraka,MignonCornet/Haraka,danucalovj/Haraka,msimerson/Haraka,Synchro/Haraka,slattery/Haraka,slattery/Haraka,haraka/Haraka,craigslist/Haraka,hatsebutz/Haraka,zombified/Haraka,AbhilashSrivastava/haraka_sniffer,Synchro/Haraka,zombified/Haraka,craigslist/Haraka,zombified/Haraka,Dexus/Haraka,jaredj/Haraka,Synchro/Haraka,baudehlo/Haraka,fatalbanana/Haraka,DarkSorrow/Haraka,Synchro/Haraka,hatsebutz/Haraka,AbhilashSrivastava/haraka_sniffer,typingArtist/Haraka