Rework creation of data source and importation

With a wizard, allow user to either upload a file, or create viruses and hosts. Later let the option to download the data/template, file it, and upload it to refresh the data

• ability to download the data
• ability to upload the data
• new wizard to create a data source while uploading or copy pasting
• test the wizard
• Remove former CreateView
• Remove UI leading to import a file as a new data source
• Remove dead code and refactor form