Remove : from various trailing parameters (#2301)

Partial fix for #2271 

This isn't an exhaustive list, but it's everything I could find. The bug still exists in the parser though, this is just a workaround for the moment

src/common/proto-irc.h

@@ -28,6 +28,8 @@
 		(time_t)0, /* timestamp */		\
 	}
 
+#define STRIP_COLON(word, word_eol, idx) (word)[(idx)][0] == ':' ? (word_eol)[(idx)]+1 : (word)[(idx)]
+
 /* Message tag information that might be passed along with a server message
  *
  * See http://ircv3.atheme.org/specification/capability-negotiation-3.1