make MOZ_PLACES (if enabled) only build the places based history UI, use MOZ_PLACES_BOOKMARKS to turn off the places based bookmarks UI.
also addresses bugs:
bug #330923: "View -> Sidebar menu" is empty if you build with places
bug #355738: implement history sidebar on top of places backend
bug #356175: hook up the history menu to the places backend
bug #356453: add back "Clear Private Data" menu item
bug #356630: add back "History | Show in Sidebar" menu item
bug #356631: remove "search in history" and "view all history" menu items
bug #357301: add back history and bookmark sidebar toolbar button items, remove places toolbar button
bug #358831: history sidebar, right mouse button click should not expand / collapse item
r=dietrich, r=gavin
