tests: demo site population

* Amends test suite demo data examples: removes `001` MARC tag, sets FFT
  local path to suite VM vagrant box.  This makes demo site population
  to work.

* Adds example how to call `invenio2-kickstart` accordingly.

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
UI: added dropdown menus
records: changed text in dedicated box