add proper disconnection in imap_util.GIMAPFetcher to avoid too many simultaneous connections problem
add proper disconnection in imap_util.GIMAPFetcher to avoid too many simultaneous connections problem

gaubert/gmvault,gaubert/gmvault,guaycuru/gmvault,erdincay/gmvault,erdincay/gmvault,erdincay/gmvault,guaycuru/gmvault,gaubert/gmvault,guaycuru/gmvault