R1:829fa6664f1e

Created Chat log application class

Summary: Created a chat log application which displays on the home page.

Test Plan: Loaded the home page to see if the chat log application really shows up on the home page.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4930