User avatars

Hello @tessr, 

Please review the following commits I made in branch 'prezjordan-avatars'.

11633873b30f3c8d01185f65c95d78b907b21418 (2013-07-26 19:20:59 -0700)
user avatars

e8fbba9eb41ee9473f2e6bde1744143e86458718 (2013-07-26 19:20:59 -0700)
made use of the new UserBuilder constructor; removed semicolons

a648b4b8bd2084203a34d0f8e6f8835ff9e40afb (2013-07-26 19:20:59 -0700)
new UserBuilder constructor to save appropriate user attributes in the database


R=@tessr
VISIBLE_CHANGES=User avatars