Fix typo so we correctly calculate Subreddit traffic weights.
promote.py: Reorganize for readability.
Stop using traffic to weight promotions.
promote.py: Use more descriptive names.
Batch lookup subreddits in make_daily_promotions.
Adweight uses Link fullname as 'link' field.
Cleanup RenderableCampaign and add batching for live campaigns.
Move CommentPane cache to the render cache pool.
Split the rendercache and pagecache.

The pagecache and rendercache have very different usage profiles.
sharelink: Clearly specifiy methods of sharing links.
Remove spurious submit form title wrap attribute.

This was prompted by buggy IE10 behavior where the "required" attribute
form validation seems to treat the textarea as empty with the "wrap"
attribute present.
Add maxlength attribute to submit form title field.
Make the subreddit field required.
Add small front page gold advertisement.
wiki: Use VSrModerator.
wiki: Rework page creation.
wiki: Remove debug statement.
wiki: Fix files undefined in finally case.
wiki: URL-escape constructed API call URLs.
wiki: Move state variables out of inline JS.