Create images and style blocks for displaying work on devices

Make desktop, tablet and mobile images and apply background images
of the work in question. The work needs to be in the correct ratio
and will probably end up being applied via style attr in the PHP loop
Some sample work images have been committed but these will be added
as images from wordpress eventually.
Fix permissions on htaccess for permalink settings
Remove dummy markup from front-page
Create CPT for portfolio items
Add Advanced Custom Fields plugin
Add template part for portfolio
Re-design device images in flat style
Add styling for portfolio including responsive layout
Add portfolio images via ACF
Center title and URL on narrow screens
Order portfolio by date descending
Merge branch 'work-page-redesign'

* work-page-redesign:
  Order portfolio by date descending
  Center title and URL on narrow screens
  Add portfolio images via ACF
  Add styling for portfolio including responsive layout
  Re-design device images in flat style
  Add template part for portfolio
  Add Advanced Custom Fields plugin
  Create CPT for portfolio items
  Remove dummy markup from front-page
  Fix permissions on htaccess for permalink settings
  Create images and style blocks for displaying work on devices