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Update Hosting Side nav contained updates related to hosting released in 2014.
This documentation outlines the updated standard and re-organizes the sidebar.

Bug: 
Change-Id: I0496ca0a4fb2c56fdfda8ba31dbf869851713ed1
Reviewed-on: https://chromium-review.googlesource.com/722062
Commit-Queue: Crystal Lambert <crystallambert@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524206}