Previously, we were deciding whether to show the spinner if the returned cursor
had more than 1 element. However, the cursor would _always_ have more than one
element because it contains a header in addition to the account information.
We now save away the number of accounts and the size of the recent list into the
cursor so we can use those counts to determine if the spinner should be shown.
Both of these counts are necessary as we want to show the spinner even if there
is only a single account as long as it has at least one recent mailbox.
Change-Id: If428c496a548a25f6b5cd7301ddb5c0d6876750c
a757aaa055