Adds API Access information to Access & Security panel.

What this does:

  * Makes the Access & Security panel use tabs for each of
    the tables instead of trying to shove them all inline.
  * Adds an "API Access" tab to the above set of tabs.
  * Combines the features of the API Endpoints table, the
    EC2 Credentials download and the OpenRC file download
    into the API Access tab mentioned above.
  * Uses the service "type" instead of "name" in the Endpoints
    table to be nicer about service API abstraction.

Fixes bug 1065671 and fixes bug 1120627.

Change-Id: Iccc65b32d37dc97a96538443cf8c5c08fcea7250
Merge "Adds API Access information to Access & Security panel."