Replace "Messages" with "Campaigns" in user history table (#235)
Replace "Messages" with "Campaigns" in user history table (#235)

* change Messages to Message in user history table

*  Change messages to campaigns

mariez/phplist3,phpList/phplist3,bramley/phplist3,phpList/phplist3,mariez/phplist3,bramley/phplist3,samtuke/phplist3,samtuke/phplist3,mariez/phplist3,samtuke/phplist3,bramley/phplist3,samtuke/phplist3,phpList/phplist3,bramley/phplist3,bramley/phplist3,mariez/phplist3,phpList/phplist3,mariez/phplist3,samtuke/phplist3,phpList/phplist3