Changed schema for media_oembed_author_name

MySQL upgrading code:
ALTER TABLE reddit_stories MODIFY COLUMN media_oembed_author_name VARCHAR(27) CHARACTER SET utf8;
Use HTTPS instead of HTTP for authentication
Preliminary support for utf8mb4 character set in MySQL

Needs mysql-python 1.2.4 and MySQL 5.5

ALTER TABLE reddit_stories MODIFY COLUMN media_oembed_description TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Set User-Agent before first request for Hacker News
Removed clicked property on reddit stories

http://www.reddit.com/r/redditdev/comments/1p7iv0/getting_heads_up_when_api_changes_remove/