Add class when any columns are hidden

Dynamically add class when any columns are hidden in swipe mode
Committing distributed js
Add class to bar when any columns hidden

Dynamically adds a class to the tablesaw-bar div when any columns are
hidden in swipe mode
Removed conflicts with jQueryUI data-sortable
Updated demos and documentation
Merge branch 'jQueryUIConflict' of https://github.com/geo242/tablesaw into geo242-jQueryUIConflict

Conflicts:
	dist/stackonly/tablesaw.stackonly.css
	dist/stackonly/tablesaw.stackonly.js
	dist/stackonly/tablesaw.stackonly.scss
	dist/tablesaw.css
	dist/tablesaw.js
Changes API to tablesaw-sortable instead of sortable-tablesaw.
Namespace default sortable col data attribute.
Namespace all the data attributes
Remove priority classes (was using the wrong class?)
Revert "Remove priority classes (was using the wrong class?)"

This reverts commit dfa06156d63226f3e745337b1646f471f5582f92.
Add a friendlier width to the stack table demo.
Not sure what this code was even doing. ¯\_(ツ)_/¯
1.0 dist files.