working on menus
added simple core data
correctly showing lobby with distance
only showing up in friends OR local users correctly!
differential updates for users!
custom user cell, animated table updates. doesnt quite work with online sort
challenges are working mostly
Some quick UI style work for the menu screen (I might as well help a little bit :)
tweak to main menu icons
aps certs
Merge remote-tracking branch 'origin/master'

* origin/master:
  tweak to main menu icons
  Some quick UI style work for the menu screen (I might as well help a little bit :)
removed comments. fixed position bug
Core Data challenges
remove all challenges when it loads
new challenges replacing old ones
actually look at the last updated instead of saving it separately
declined working great!
blue color for pending
accepting on both screens
remove challenge on match start