TCEMAIN.tsconfig - hardcoded group uid

TCEMAIN.tsconfig

I guess the hardcoded uid = 1 is not ok. If this is supposed to be a configuration example, it should not be active code.

```
#################
#### TCEMAIN ####
#################
TCEMAIN {
permissions {
groupid = 1
user = show, editcontent, edit, new, delete
group = show, editcontent, edit, new, delete
everybody =
}
}
```

Start by locating TCEMAIN.tsconfig and inspect the shown permissions block in context. Determine how this configuration example is intended to behave without relying on a hardcoded group UID, then verify the resulting configuration no longer embeds the reported fixed value.

Written by the indexing model from the issue text.