Added error message when uploading and connection not available.
Added function header comments to hash function
Added function header comments to name function
Added function header comments to file_is_accessible function
Added function header comments to size function
Merge branch 'ajgajg1134-master'

* ajgajg1134-master:
  Added function header comments to size function
  Added function header comments to file_is_accessible function
  Added function header comments to name function
  Added function header comments to hash function
  Added error message when uploading and connection not available.