Update Parse keys to Greatist account
updated icons and nav bar
fixing merge conflicts in the constants file
resolved merge conflicts
updated compose post icons
Merge branch 'composeIcons' into alternateUniverse
Merge branch 'alternateUniverse' of github.com:Baconthorpe/Greatist_iOS_App_Ever into alternateUniverse
updated size of post icon
Merge branch 'alternateUniverse' of github.com:Baconthorpe/Greatist_iOS_App_Ever into alternateUniverse