accountwizard_imap - en to ga translation catalogue (3 entries)

note: i18n: ectx: property (text), widget (QLabel, label_2)
en: &Incoming server:
ga: Freastalaí &isteach:

note: i18n: ectx: property (text), widget (QLabel, label_4)
en: &Outgoing server:
ga: Freastalaí &amach:

note: i18n: ectx: property (text), widget (QCheckBox, disconnectedMode)
en: &Download all messages for offline use
ga: Í&osluchtaigh gach teachtaireacht le léamh as líne
