String change in backup-restore plugin.

["anand muttagi" <avmuttagi gmail com>]

Hi,

I have resolved different string issues in backup-restore plugin.

1.Using only one term in backup-restore plugin by replacing occurence of string "archive" with "backup".

2.Replaced
 string "With GUI" by string "With Graphical User Interface" in ../plugins/backup-restore/backup.c:48 to help in translation.

3.String "Mails/Calendars/Tasks/Memos/Addressbook" is replaced by "Mails, Contacts, Calendar, Tasks, Memos" in ../plugins/backup-restore/backup-
restore.c:238.

4."Backing up to %s" is changed to "Backing up to the folder %s" and "Restoring from %s" is changed to "Restoring from the folder %s"
in ../plugins/backup-restore/backup.c

Thanks
Anand V M