Ditch the client side storage for epiceditor

- Hide 'preview' button since we have our own
Separate bootstrap components into separate files to be explicit
Filter blog admin list by author
Use a partial for blog admin nav sidebar
Create public blog page
Use 'urlify2' package to generate slug, just in case
Move some helper logic into model
Consolidate logic. Save new post redirects to edit that post.
Use named routes
Add single blog page. Add minimal social share links.