feat(email redesign)

- change grunt to include html partials during assemble
- create a responsive main layout based on the new design
- create html partials for re-usable elements (i.e two column responsive grid, header,footer,fake post job form, action buttons, email title with icons, pph signature etc)
- organize pph css code in files
Do we need the DOCTYPE, head html etc, or this is only for testing?