add edit mode templates
add edit mode functionality
basic styling for html editor
Fix issue when switching between edit modes with empty content

- 'getPost' returns empty object by default
- Fix CSS on edit mode toggles
- Rename 'visual-html-toggle' to 'preview-toggle'
Fix issue in admin edit where existing blog contents sometimes did not show
Consolidate some logic
Merge pull request #61 from  ryanmehta/html-editor
add comment collection
publish comments by post slug
make post paragraphs commentable
setup template for commenting
setup SideComments instence
change route to load comment data
include side-comments
add side-comments.js and .css
turn comments on/off per page
add settings to show side comments
only show side comments if Blog.settings.comments.useSideComments is true
remove comment column
add ability to allow or disallow anonymous commenters