Tweaks to footer

* Put copyright notice at the bottom
* Darken copyright notice to match link colour more
Tweak listing date colour

* Use a darker colour for better matching with links and the horizontal
dots
Remove old footer styles
Add more margin beneath latest posts
Make thumbnails full bleed

* Remove the black container, make images full bleed
* Remove the need for an inline background image by setting the img tag
to be display block, this removes the weird issue where the image was
leaving a small gap at the bottom of the list item element.
* Include top and bottom borders to match photo pages