Update jquery.tablesorter.js to 2.17.8
Remove sorting on the 4th column
Change sort order to be compliant with new js version
Change tablesorter css to be compliant with new js version
Merge pull request #442 from daniviga/upstream

Update jquery.tablesorter.js to 2.17.8
Merge branch 'master' of https://github.com/retspen/webvirtmgr