Fixes two issues:
1. if a recent folder was selected from the spinner, the user could not
re-select it (even if they navigated to another mailbox using the mailbox
list) unless they manually selected another element in the spinner
2. the recent item "show all folders" did not set the associated account
position, so, when selecting that item, the spinner was not showing the
correct view.
Change-Id: I469f9f28aebd36a348534def28a4c476c0df366d
7305cf5c8e