STORM-381 Replace broken jquery.tablesorter.min.js to latest

* from https://github.com/Mottie/tablesorter
* Version: 2.17.3
* Link: https://github.com/Mottie/tablesorter/raw/master/js/jquery.tablesorter.min.js
STORM-328 More restrictive to Config, strict range check within Utils.getInt
Remove magic numbers to be easily understood
Merge branch 'STORM-328' of https://github.com/HeartSaVioR/incubator-storm into STORM-328

STORM-328: More restrictive Config checks, strict range check within Utils.getInt()
Added STORM-328 to changelog and readme
Merge branch 'master' of https://github.com/HeartSaVioR/incubator-storm into STORM-381

STORM-381: Replace broken jquery.tablesorter.min.js to latest
Updating LICENSE and CHANGELOG for STORM-381
made read-assignment retry on reading inconsistent assignments.