1. Error banner now pushes down the entire screen, rather than covers it.
2. Switch to the new ObjectAnimator for the animation to achieve #1.
(Traditional Animation doesn't do this)
3. Dismiss the banner when getting any callback with MessagingException == null
and progress > 0, only when the account is the one that caused the last error.
4. MessageListXL now registers its own ControllerResult to detect
connection errors, and more importantly, when they're cleared.
Bug 3240874
Bug 3240406
Change-Id: I07f8e2f589bb1d312859824f9ec398879003ba16
We lost the reporting of connection errors in the UI. These were
originally displayed in FolderMessageList, under the name of each folder.
In the new implementation, we borrow the "undo" banner from Gmail and
display it whenever there is a connection error in a mailbox.
* Add banner, and code to animate it on/off the top of the list.
* Toggle banner whenever a connection state change occurs in MessageList
* Toggle banner whenever a connection state change occurs in MailboxList
* Slight change to callback semantics for sendMailCallback
* Toggle small pane with multi-select action buttons
* Implement multi-read/unread
* Implement multi-favorites (stars)
* Implement multi-delete
TODO: menu items when there are selected items
