JBIDE-14597 warning about ng-* attributes used by angular js should be possible to ignore

JUnit test for the issue is updated.
The 'tests run twice as much' is fixed.

Signed-off-by: vrubezhny <vrubezhny@exadel.com>
JBIDE-14597 warning about ng-* attributes used by angular js should be possible to ignore

Fixed NPE in CreateNewFileHyperlinkDetector in case when attribute has no value