Add missing title to Template Properties dialog

And disable manual resizing

Change-Id: I3c78b09930833eb84bbd84a553d2f07ff8573e0b
Reviewed-on: https://gerrit.libreoffice.org/11870
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>