Functional test for table sorting

AFDP-38
Fixed xpath expressions used for dom selection

AFDP-38
Added sorting to the enrolled fixtures view

AFDP-38
Adding styling to sorting column headers

AFDP-38
Added functional test to validate table filtering/searching

AFDP-38
Merge pull request #12 from ualerts-org/AFDP-38

Afdp 38