Added Global Helper Classes for porting of WET-BOEW core functions

* Extended namespace support .wb('function', params) to avoid future
collisions
* Corrected Grunt.js to include helper core at the beginning of
wet-boew.js
* Added 'show' and 'hide' function with aria support
* Fixed casing of variable name
Merge pull request #2904 from masterbee/helpers-codebase

Added Global Helper Classes for porting of WET-BOEW core functions