Better Export/Import & String Conversion Options

[JordanRL]

Allow options for printing and exporting in more formats:

• Grouping
  • Control of grouping: 100,000,000 vs 100000000
  • [x] Export/Print
  • [x] Import
  • Control of grouping size: 100,000,000 vs 1,0000,0000
  • [x] Export/Print
  • [x] Import
  • Control of grouping delimiter: 100,000,000 vs 100.000.000
  • [x] Export/Print
  • [x] Import
• Radix
  • Control of radix character: 3.14159 vs 3,14159
  • [x] Export/Print
  • [x] Import