The preamble is not used since this document should only be compiled
from documents that include it. Similarly, setting the master
document is not useful.
Bibliography.lyx is not expected to be compiled on its own. This
commit reverts 3ac2dd8e and instead adds a LyX note explaining that
an error is expected if the .lyx file is compiled.
Manuals, examples and templates that use (traditional) bibtex should have set the bibliography processor to bibtex. Else, these documents do not compile if a user has set the processor to 'biber' in the preferences
When a user creates a new document from a template, the template
is copied but relative paths are not changed, so the resulting
.lyx file is broken. By moving documents with relative paths to
examples, the files will compile out of the box.
A long-term solution that allows for relative paths in templates
is still desired and will be discussed in #8643 or in a new ticket.
