Style updates and functionality additions

• Change rendering of the styleguide documentation to lean on bootstrap column grid
• Add logic to render only the tabs that work for a particular atom based on what data is present
• Add alert messaging for atoms in the preview area to flag that it will not render
• Reduce and organize CSS with section comments for clarity
• Add color to the nesting of the schema editor
• Increase size of buttons for better accessibility for those of us with poor vision :D
• Add ability to designate order on documentation in the markdown and render the secondary nav in that order
• Update jQuery package to reference CDN for consistency