Merge pull request #93 from leituo56/Dev_TuoLei

Dev tuo lei
Final Commit by Xiaoli : )
add find_friend button, change UPLOAD position in navbar, find_friend list default list
Merge pull request #94 from leituo56/dev-xiaoli

Final Commit by Xiaoli : )
styled stats page, minor changes to title of bar charts, fix nav filter bar (go to top when click on any button)
Merge pull request #95 from leituo56/dev_jenn2

styled stats page, minor changes to title of bar charts, fix nav filter ...
one style change (stats page)