Update slick.editors.js

Jquery 1.6+ requires use of prop instead of attr to manipulate checked state.
Update slick.editors.js
very minor  Example fix - No code , changed Drag to Resize
Add PgUp/PgDown handling.
Merge pull request #705 from dekajp/Issue-701

very minor  Example fix - No code , changed word Drag to Resize
Merge pull request #704 from jbthoma/patch-1

Fix for CheckboxEditor
Check group title in .equals().
Added a 'slick-range-decorator' class to CellRangeDecorator.

This makes it possible to style the cell range decoration in CSS.
Make the CellRangeDecorator selection CSS class configurable via 'selectionCssClass' option.
Bump version to 2.2.
Merge pull request #4 from mleibman/master

Merge with mleibmen