Added support for _NET_WM_STATE_BELOW and window_below command

[a0405u]

Solved the issue I mentioned. WM now reads _NET_WM_STATE_BELOW when managing window and saves it in client.below. Raising the window is now made with the respect to _NET_WM_STATE_BELOW and client.below. Always below state can now be toggled with berryc window_below command. I had to rearrange client_manage_focus and switch_ws in ipc_pointer_focus because swith_ws was focusing top most window after handling the switch and it moved the focus away from the bottom window that you're trying to point on.

[a0405u]

Removed client->below completely. Now everything is done dynamically according to current _NET_WM_STATE, even if it was set or changed by the application bypassing berry.

[a0405u]

One thing that's left is to add window_below to docs and help, but I'm not sure how exactly. Should I edit berryc.1 or is it generated?

[JLErvin]

One thing that's left is to add window_below to docs and help, but I'm not sure how exactly. Should I edit berryc.1 or is it generated?

Yes, edit berryc.1. The man files are generated/installed as part of the make process.

For the website, you'll need to make a separate PR in https://github.com/JLErvin/berry-doc. Sadly the process is not tied to the man page build process at all.