Remove dependency on tablesorter which is no longer required
Updated requirements
Merge pull request #300 from jvc26/remove-tablesorter

Remove dependency on tablesorter which is no longer required
Merge pull request #301 from jvc26/update-requirements

Updated requirements
Require django-compressor
Enable django-compressor
Merge pull request #302 from jvc26/cellcounter/cellcounter#211

cellcounter/cellcounter#211