In gitlab, there is no extra CI job running for commits in a merge
request (MR). This means, we can't run different code in a MR against
"master".
So instead of only checking whether all devices are booting if there's
a MR against master, always perform this check.
I've edited the message slightly, so it's clear that it's only required
to have the devices booting when making a merge request against master.
Add a simple script, that checks whether all device's codenames can be
found in the device overview in the wiki. This way we're always sure
that every device is documented in the wiki's device table.