Handle OfflineImapError of severity REPO and CRIT
Handle OfflineImapError of severity REPO and CRIT

By aborting the account syncing, the looping and logging an error
message. We will introduce a ui.error() rather than a ui.warn() function
which saves all Exceptions in a Queue and outputs them at the end of the
program.

Signed-off-by: Sebastian Spaeth <98dcb2717ddae152d5b359c6ea97e4fe34a29d4c@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <347709267ddd1958560c4c317ea3fd613f10a719@laposte.net>

frioux/offlineimap,frioux/offlineimap