Merge pull request #1486 from Spuds/Standard

Some small changes
! prevent query error when no key is supplied

Signed-off-by: Spuds <spuds@spudsdesign.com>
! missing column name thats needed in the logic

Signed-off-by: Spuds <spuds@spudsdesign.com>
! update the notification layout when PBE is enabled
! update some language strings (sorry)

Signed-off-by: Spuds <spuds@spudsdesign.com>
! update a bit the pbe mail templates
so they indicate you CAN reply

Signed-off-by: Spuds <spuds@spudsdesign.com>
! Update to improve the auto delete imap function
! Gmail has unique requirements to purge messages
! use message UID everywhere instead of sequence numbers

Signed-off-by: Spuds <spuds@spudsdesign.com>