Added a back button
Merge branch 'master' of github.com:faizalzakaria/dash_app

# By Faizal Zakaria (4) and Timothy Su (1)
# Via Timothy Su
* 'master' of github.com:faizalzakaria/dash_app:
  Changed order of loading css files
  Add pg
  Update
  Add propre google map
  Add google map