block more attachment file types
block more attachment file types

https://support.google.com/mail/answer/6590?hl=en

closes #1184

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