Helmet integration

Changes:

• Updated NPM plugins
• Refactored base index files for components for stack trace (React Dev Tools)
• Helmet integration - supports google context schemas which can be integrated in other components

pre-content layout

Changes:

• added material-ui themeable footer
• added theme based layout wrapper
• added material design community icons [https://materialdesignicons.com/]
• fixed .less loader
• locked npm dependencies

Dark theme demo

Working themeable boilerplate