on app start, always start with first/weechat buffer

[azrdev]

apparently the app selects (at first use? I've not understood the pattern yet) one buffer, which it always opens after having been closed (or put to background?).
This is bad for me if that happens to be a buffer which frequently has new messages, which I might not want to read just yet, but keep the unread status (and unread marker!). I'd prefer if the app always opens in the (usually empty) weechat buffer, the first in the buffer list