refactor: #66

bin/backend/classes/Sortable.css

bin/backend/classes/Sortable.js

bin/backend/controls/InvoiceArticleList.css

bin/backend/controls/InvoiceArticleList.html

bin/backend/controls/InvoiceArticleList.js

...kend/controls/InvoiceArticleList.sortablePlaceholder.html

bin/backend/controls/articles/Article.css

bin/backend/controls/articles/Article.html

bin/backend/controls/articles/Article.js

bin/backend/controls/articles/Text.css

bin/backend/controls/articles/Text.html

bin/backend/controls/articles/Text.js

bin/backend/controls/panels/TemporaryInvoice.Summary.js

bin/backend/controls/panels/TemporaryInvoice.js

...rols/panels/product/AddProductWindow.ProductSettings.html

bin/backend/controls/panels/product/AddProductWindow.css

bin/backend/controls/panels/product/AddProductWindow.js

locale.xml