FreeDesktop Completeness - Mimetypes

[snwh]

Complete all these icons at all sizes for fd.o completeness

• application-x-executable
• audio-x-generic
• font-x-generic
• image-x-generic
• package-x-generic
• text-html
• text-x-generic
• text-x-generic-template
• text-x-script
• video-x-generic
• x-office-address-book
• x-office-calendar
• x-office-document
• x-office-presentation
• x-office-spreadsheet