Merge pull request #1441 from pjackson28/v3.0

Removed dependency on outside events and optimized Share widget and menu bar
Merge pull request #1443 from pjackson28/master

Removed dependency on outside events and optimized Share widget and menu bar
Merge pull request #1444 from pjackson28/master

Corrected minor Share widget comment
updated code for column-count
Column count CSS changed to match naming conventions

column-two, column-three and column-four change to column-2, column-3
and column-4 to match CSS naming conventions. As this is not a popular
feature and only works in IE9+, there isn't much uptake on it yet so old
CSS names removed. No legacy support provided as it's new as of WET 3
anyhow.
Merge pull request #1446 from cfarquharson/master

updated code for column-count as there is new CSS.
Fixes gh-1149
Added missing clear in tabbed interface working examples.
Merge branch 'v3.0'