Merge pull request #85 from ehmatthes/ongoing_development

Fixed broken anchor links on /guidelines.
Conversations page shows comments user has made, but not replies yet.
Conversations code identifies user's first_order_comments.
Conversations seems to work, but not efficient (too many queries).
Load test adds unique identifier to each comment/ reply, for debugging comment system.
Was showing too many first-order comments (repetition); fixed.
Conversations page shows all comments and replies in proper order.
One less query.
Commented that query.
Merge pull request #88 from ehmatthes/conversations

Conversations
Added 'Features' page, to describe new features.
Added title to conversations page.
Better visual separation between individual conversations.
Added link to share feedback.
Fixed bug in calculating comment ranking_points; points were not being saved.
Outlined approach to ordering conversations by most recent reply in each conversation.
Pulls out each conversation individually.
Load test generates random submission_time for each comment, reply.
Factored out submission_time calculation.
Conversations are ordered by most recent reply.