bug 2254 [3/3]: add authority type check

bug 2254 [3/3]: add authority type check

Added a test to the MARC framework checks to
verify that all authority types used in a framework
are defined.

Documentation changes: possible new screenshots
and text to describe the new test.

NOTE: This patch adds strings to the checkmarc template, and thus
      violates the string freeze for 3.0.  I'm submitting anyway
      because 2254 is a blocker, but if no exception is made,
      it is safe to not apply this patch for 3.0.

Signed-off-by: Joshua Ferraro <jmf@liblime.com>