maxFileSize wont be supported

it requires UI version of jqueryfileuploader
caching $form and $submit elements
setting proper dropzone
allowing multiple files to be uploaded at once
uploads are sequential

required so that we can enforce maximum files user can upload
refactoring event handlers
progress indication
updated to reflect latest changes
including assets in vendor directory
fetching assets from github
callback is not used
switching to capybara-webkit
switching to capybara-webkit
extracting common extension behavior
refactoring extensions
handling blank strings
turning blanks into nils
allowing uploads by urls
refactoring utils
bugfix: passing proper scopes