xcode project reorganization

- map group paths to directories
- keep files sorted by name inside groups
- not touching Database since the app explodes in
  a nuclear fireball if I do that… (srsly Apple?)
removed unused CBClient (coinbase) code for now
moved NPZip to Lib subdirectory
BCClient cleanup/refactoring
moved BCClient to "Backend" directory
removed some more unused stuff from BCClient
fixed broken profile page