We don't want forms in the no-DBCONNECTIVITY case after all, I think

Change-Id: I84e5334c8db4d5c41eccb5ab2203c07aafd20adb
More --disable-database-connectivity work

Bypass various database field and mail-merge functionality in the case
of !HAVE_FEATURE_DBCONNECTIVITY.

Now TiledLibreOffice builds and runs.

Change-Id: I9aa167413f426fe28d44dd063dc661f468ddc847