Fixed minor bug in the ensight gold reader.

Was not skipping bar3 elements properly. Also removed
warnings that were no longer necessary. This reader now
supports higher order elements.

Change-Id: I9f89100d2a67fb704cdc59900d2fce16e7349c0f
Added EnSight tests to increase coverage.

Also added associated data.

Change-Id: I29de59dabf130855aff68c73ff50bf6f35048b56
Merge topic 'ensightgold-bugfix' into master

6066b788 Fixed minor bug in the ensight gold reader.
Merge topic 'added-ensight-tests' into master

37dc617d Added EnSight tests to increase coverage.