Bug 851548 - Fix launching apps via agent when no user serial available;r=mcote

This can happen with older versions of the agent without user serial
support.
Bug 852296 - Add documentation for moznetwork;r=mcote
Bug 852422 - ManifestDestiny doc updates;r=jhammel
Bug 797832 - [mozprofile] AddonManager.addon_details(path) should support XPI/JAR files. r=hskupin
Bug 851292 - Allow user specified proxy information in mozprofile.permissions, r=jhammel
Bug 851292 - Follow up fix for busted tests, r=bustage
Bump mozprofile to 0.6 for bug 851292
Bug 853956 - mozhttpd doc additions/improvements;r=jhammel