Add missing variables for buttons, type, and visibility to _setting.scss.
fix bug that makes background color appear on hover on side nav
Docs fix for Alert Box examples. Fixes #3664

The advanced examples for Alert Boxes were missing the data-alert
attribute in the example code
Update README.md
Modified FastClick initialization to delay until document ready.
Fixed spelling error
Fix sticky topbar typo.
Bump topbar version to 5.0.3
Bump core version to 5.0.3