report: Fixed search by url/hash containing special chars like & and =.
report: Fixed search by url/hash containing special chars like & and =.

Also cleaned up handling hash in general.

Update issue 1634
Fixed url/hash search with special chars. Search functionality is now ready for testing/review.

userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3