Bug 13274: t/00-load.t shouldn't depend on the DB

Bug 13274: t/00-load.t shouldn't depend on the DB

To reproduce:
- Stop your MySQL server:
  $ sudo service mysql stop
- Run
  $ prove t/00-load.t
=> FAIL: some tests fail because of mysql stopped

To test (MySQL still stopped)
- Apply the patch
- Run
  $ prove t/00-load.t
=> SUCCESS: tests pass because the ycan be loaded regardless of
            the absence of the DB server
- Sign off :-D

NOTE: Even seems to grab more than expected, which is good.
      349 tests in master vs 364 in this branch = 16,
      but removed block is only 13 (lines 20-32).
      Also ran koha-qa test tool. :)

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Works as described, tests passing now without database available.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>