Merge pull request #143 from Cu3PO42/master

Implement date filtering on /reference/all.
Fix small bug and add proper user data
Change login button wording.
Add subreddit to giveaways.
Fix #144. Don't allow empty comments.
Allow multiple eggs per url. Fixes #141
Add markdown for comments.
Add markdown for information.
Fix bug where mods couldn't edit other user's info
possible fix for users that don't have flair set.
Empty the new comment when comment is added.
Markdown for mod comments.
Add license
Add notes to trade model.
Add some placeholders. Fix #159
Expand gave/got when clicked in, or text is input. Fixes #117
Link to the user's fapp public reference, rather than reddit. Fixes #161
Add confirmation for denying a flair app. Fixes #162
Add 'Add references' link to header. Fixes #157
Add egg links [](/egg) to css. Fixes #154