Bug 995599 - prevent services tests hitting the network. r=rnewman

--HG--
extra : rebase_source : f38fefae031f4cbd94215ee61f89a553b1f5c272
Bug 975235 - Send click pings for Directory Tiles (including which link, tile, other metadata) [r=adw]
Send a ping from the DirectoryLinks module on various click actions from newtab page.
Bug 1014323 - Do not add about:privatebrowsing to recently closed tabs r=ttaubert
Bug 979207 - add PanelUI panelshown listener before showing panel, r=mikedeboer
Merge latest green fx-team changeset and mozilla-central; a=merge