Merge pull request #20 from leituo56/Dev_TuoLei

Bug Fixes, Anonymous user errors
Xiaoli -  statistic change -from master
change find_friends, site_stat link
Merge pull request #21 from leituo56/dev-xiaoli

Dev xiaoli
Added Social Network's name
Merge pull request #22 from leituo56/dev_jenn2

Added Social Network's name
Comment:
Comment function update
Comment fix
fix view and urls
Merge pull request #23 from leituo56/Wenjia

Comment fix
Sammie's coding for the profile page
Revert "Sammie's coding for the profile page"

This reverts commit 1d26c20ccc76536974d64c83b521bf7ca3a66a70.