transition tweaks, css file restructuring
complete css restructure, major changes to pages and posts

- new organization scheme in css
- more commented structure in css
- post replaced by article
- page replace by static-page
- cardicle style now called card
- new previous/next buttons
fixed layout type for science literacy post
fix for typographic measure at different screen sizes via padding adjustment
refinements to previous/next navigation for pages
ignore dsstore files
Merge remote-tracking branch 'origin/20130713layouts'
Merge branch 'master' of https://github.com/opattison/jeancflanagan