UI Improvements to Chatlog Application

Summary: Made improvements to the Chatlog application UI. Added Header & crumbs. Added service name and service type to the channel list table.

Test Plan: By checking out the chatlog application.

Reviewers: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5079
Always show inline comment column in Pholio

Summary:
  - Always show the column so there's no jumping around when comments are added.
  - Set width to 320px so we can mobile it (not 100% sure how this will work yet).
  - When there are too many comments, scroll them internally.

Test Plan: {F33552}

Reviewers: ljalonen, chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D5071