fb: upload image, dont crash on empty fields, better transition (to usable state), disable share button while sharing is in process
fb: upload image, dont crash on empty fields, better transition (to usable state), disable share button while sharing is in process

shnergle/ShnergleApp-iOS,shnergle/ShnergleApp-iOS,shnergle/ShnergleApp-iOS,shnergle/ShnergleApp-iOS