Create overview of Conduit methods

Summary:
Also couple of small changes:

• Add method name to title.
• 404 for /conduit/method/x/.
• Remove utilities from side panel.
• Remove side panel from log.

Test Plan:
/conduit/
/conduit/method/x/
/conduit/method/user.whoami/
/conduit/log/

Reviewers: btrahan, epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2326