Improvements

- New Design
- Use CDNs to serve most libraries
- Use Markdown
- Use Prettyprint
- Use Composer to install dependencies
- Use ident logo in gravatar
- Use icons
Adding markdown editor, allowing moderators to edit others posts and replies
Allow to see modifications history on posts
Human dates instead of full dates
Mark with a timestamp when comments were modified
Edit/Delete icons
Users now have karma/reputation
Posts now can be voted up or down
Update karma when posting or commenting
Allowing users to vote replies
Improving Karma system, adding reponsive css, adding collaboration notes, help section
Enable users to see revisions on replies
Enable deleting of discussions, other fixes
Changing send notifications to SMTP, Updating sitemap,
Removing AWS
Minor Fixes
Showing votes when users aren't logged in, autoresize code mirror when adding more lines, other fixes
Fixed "Last reply" column, improved editor resizing, other fixes
Allowing users to mention others, styling markdown tables with bootstrap
Adding accepted answer functionality, other fixes