basic dropzone
Merge branch 'feature-dropzone' into development

Conflicts:
	src/Hn/AssetDbBundle/Controller/DashboardController.php
	src/Hn/AssetDbBundle/Resources/assets/sass/main.sass
	src/Hn/AssetDbBundle/Resources/views/layout.html.twig
ajaxloader
Merge branch 'feature-ajaxLoader' into development