added a new light grey #define for background of timeline posts
made the nav bar title bold
lightened the post background color
added a cornerRadius of 5.0px on icons
lightened the background color to match posts
adjusted cell positioning
Merge branch 'map_master' of https://github.com/dennykwon/Atlas into map_master
added array constant for Facebook permissions
connect Twitter share functionality. conform to UIActionSheet delegate
merge conflicts