resolves #82

This will provide a way to extract guano metadata from the file itself.

The process will allow users during upload to click on a button to extract metadata. This will send the file to the server for data extraction and return back defaults that can be set for the system. I think this is probably the easiest method as opposed to having it extracted after upload time.

TODO:

• Add to recording fields for species label, auto species label, software and other information that comes from the guano metadata.
• Implement the front-end tools to push the data and extract the information to be placed in the standard upload editor and batch editors.
• Return the guano metadata in standard getting of information for the lists, this includes the specification for the client side specs.
• Find a way to display newer data in the main list view as well as in individual spectrograms. I feel that we may need a special 'details' hover or click toggle to show details about individual recordings.