venue detail page - add map, add tips, "add fourU" button & modal
add fav form connection with add.php
Merge branch 'dev_xiaoli_2'

* dev_xiaoli_2:
  add fav form connection with add.php
  venue detail page - add map, add tips, "add fourU" button & modal

Conflicts:
	src/venuedetails.php
fix bug of undefined tip author name
Merge pull request #36 from jennjwu/dev_xiaoli_2

fix bug of undefined tip author name