Updating site to oauth.reddit.com

Changes to reddit on 2/18/2014 makes ssl.reddit.com only acceptable for
authorization and access_token fetching.  All other API calls must go
through oauth.reddit.com.
Dynamic Authorize URL based on User Agent

Display compact authorize page if user is on mobile device.
Dynamic Authorize URL based on User Agent

Use Compact Authorize URL for mobile devices
Merge pull request #5 from wbarnhill/master

Updating site to oauth.reddit.com - thx for contribution!