created connectivity error message on failed post
there is now a method called 'clearOldPosts' that deletes old posts and posts from other users are saved with a placeholder user
data manager now recognizes when a new post from Parse was written by the user
removed possibly excessive calls to save context
Merge branch 'reachability'

Conflicts:
	Greatist Message Publisher/Greatist Message Publisher/Model/GRTDataManager.m
Merge branch 'master' of github.com:Baconthorpe/Greatist_iOS_App_Ever
save context has been removed a few times
resolved merge conflicts
updated compose post icons
Merge branch 'composeIcons' into alternateUniverse
think post post crash bug may be fixed
Merge branch 'alternateUniverse' of github.com:Baconthorpe/Greatist_iOS_App_Ever into alternateUniverse
Update Facebook id to HealthyTalk
updated size of post icon
resolved double saving error
Merge branch 'alternateUniverse' of github.com:Baconthorpe/Greatist_iOS_App_Ever into alternateUniverse
fixed post post bug in select responses view controller
Merge branch 'alternateUniverse' of github.com:Baconthorpe/Greatist_iOS_App_Ever into alternateUniverse
small tweak
Merge branch 'master' of github.com:Baconthorpe/Greatist_iOS_App_Ever