Bug Fixes in Networking Tools
* Don't insert multiple consecutive remember lines. This doesn't get us the "have one, moving remember line" behavior we'd really like to have, but gets rid of the most annoying property of the current system.
* Morph the option to insert a remember line when the window is mini-mized into an option to insert a remember line when a chat window is hidden (i.e. on tab switches, too).
* Support inserting remember lines into DCC Chats and Status windows, too.
* Clean up the remember line-related prefs strings.