[WIP] First interation of downloading metadata.

Not ready. Needs a shallow route for sites. Requires changes to baw-server
debugging changelog
[WIP] First interation of downloading metadata.

Not ready. Needs a shallow route for sites. Requires changes to baw-server
fixed path for shallow site route. still waiting on project id link
resolved merge conflict
Finished work adding in metadata retieval and display.

 - Changed angular's default Accept header to 'application/json' only to counter weird rails bug on server
 - Added styling for the new metadata
 - Added support for downloading multiple projects and support for (not) accessing projects that the user does not have permission to access
 - Added support for short site routes
 - Added an angular filter for formatting strings
resolved merge conflicts, unable to test, server down
Code review complete
Merge pull request #58 from QutBioacoustics/download-extra-metadata

feature(editor) Downloading additional metadata for header.