LPS-38138 - make form navigation horizontal for mobile and fix ckeditor overflow issues on webkit

LPS-38138 - Article structure toolbar should float left in mobile

LPS-38138 - Form navigator navigation should be above ckeditor on smaller screens

LPS-38189 - Remove uneeded white space above nav

LPS-38138 - Source formatting

LPS-38138 - more sf's
LPS-38138 - Improving respond-to mixin to support grouping devices
LPS-38138 - Move css related to layout changes to form_navigator.css, convert media queries, spacing adjustments
LPS-38138 - SF: Removing unneeded styles
LPS-38138 - SF: not rendering the toolbar if it's never used
LPS-38138 - SF: Allow styling sub elements based on if we're adding or editing an article
LPS-38138 - General source formatting