improved validation process
minor fix on validation
plugged validate() to fill() to test functions
Merge branch 'master' of github.com:medialab/reference_manager
Fixed broken raw.github.com imports

Github has recently changed the MIME type of files from raw.github.com, so it is no more possible to directly import JS files from raw.github.com (see http://stackoverflow.com/a/16262293 for more information).

Hopefully, someone opened a service at rawgithub.com that sends the file with the good type.