How to launch:
- Kick "Email 2 Pane" in the app drawer.
Major known issues:
- When you launches "Email 2 Pane", it starts directly; the logic in Welcom
won't be executed.
- There's no UI to add accounts. Use the old UI.
- There's no way to select non-default accounts.
- The on-screen buttons except for older/newer don't work.
- No contex menus work.
Change-Id: I38374acafafbae62e46f84294a7677e54686cfc2
Introducing MessageOrderManager which maintains a message list for
MessageView. It's used to tell if there is newer/older messages
in a mailbox, and the id of them.
Also, slightly related to this, moved mWaitForLoadMessageId to
ControllerResults where it should belong.
Change-Id: I84e32180c7e84a317f2204bb10ad7245ec022dca
Makoto Onuki