Go to eol after `weechat-replace-input'.

Can be deactivated with NOT-MOVE-EOL parameter.  But seems to be a
better behaviour than bol.

Signed-off-by: Rüdiger Sonderfeld <ruediger@c-plusplus.de>
Copy only message text unless prefix in `weechat-return'.

Maybe switch prefix/non-prefix behaviour around?

Signed-off-by: Rüdiger Sonderfeld <ruediger@c-plusplus.de>