Replace Metawidget with JSON-editor for quantification fields

src/main/webapp/js/3rdparty/jsoneditor.js

...bapp/js/3rdparty/metawidget/angular/metawidget-angular.js

.../js/3rdparty/metawidget/angular/metawidget-angular.min.js

.../js/3rdparty/metawidget/bootstrap/metawidget-bootstrap.js

...3rdparty/metawidget/bootstrap/metawidget-bootstrap.min.js

...webapp/js/3rdparty/metawidget/core/metawidget-core.min.js

.../metawidget/core/metawidget-inspectionresultprocessors.js

...bapp/js/3rdparty/metawidget/core/metawidget-inspectors.js

.../webapp/js/3rdparty/metawidget/core/metawidget-layouts.js

...in/webapp/js/3rdparty/metawidget/core/metawidget-utils.js

...pp/js/3rdparty/metawidget/core/metawidget-webcomponent.js

.../js/3rdparty/metawidget/core/metawidget-widgetbuilders.js

...s/3rdparty/metawidget/core/metawidget-widgetprocessors.js

src/main/webapp/js/3rdparty/metawidget/core/metawidget.js

...p/js/3rdparty/metawidget/jquery-ui/metawidget-jqueryui.js

.../3rdparty/metawidget/jquery-ui/metawidget-jqueryui.min.js

...party/metawidget/jquery.mobile/metawidget-jquerymobile.js

...y/metawidget/jquery.mobile/metawidget-jquerymobile.min.js

src/main/webapp/templates/observationForm.ftl