You will need an autopilot before you see anything happen in QGC.
Yes you should still see the webpage. What is the result of the command screen -ls on the Pi?
the output is :
pi@raspberrypi:~ $ screen -ls
There are screens on:
571.wldriver (13/12/17 03:48:08) (Detached)
561.nmearx (13/12/17 03:48:07) (Detached)
528.commrouter (13/12/17 03:48:05) (Detached)
3 Sockets in /var/run/screen/S-pi.
In Companion Computer it says: Currently, only the Raspberry Pi 3 is supported for use with the Companion Computer Software but I am using a RPi 1 Model B.
Does this cause a problem ?
Yes.
Only the Raspberry Pi 3 model B is supported.