Merge pull request #2 from frankrousseau/master

Minor improvements
Using standard constructor
Standard render call
Code refactoring, small bugfix in forms
LIttle code simplifications
Fixed progress bar
Prevent folder upload, multiple files upload on drag and drop, minor style improvements
Minor code refacoring to follow standards
Cleaning up unnecessary code
Little style improvements
Search view, visual improvements
Styling
Multiple files upload
added backend realtime helper
socket listeners - beginnings
Realtime with socket.io
Polyglot: init, folder view
Polyglot - more texts
Polyglot finished
Simple file sharing