Added server port property for Heroku
Added server port property for Heroku

PaballoDitshego/grassroot-platform,grassrootza/grassroot-platform,grassrootza/grassroot-platform,mokoka/grassroot-platform,mokoka/grassroot-platform,mokoka/grassroot-platform,mokoka/grassroot-platform,PaballoDitshego/grassroot-platform,grassrootza/grassroot-platform,PaballoDitshego/grassroot-platform,PaballoDitshego/grassroot-platform