Add UI to select format to convert from/to when importing data from a file.
Add ability to convert data format on import.
Add API endpoint to list available format conversions.
Load available format conversions from API. Only show conversions that are relevant to the source type.
Display conversion settings for import operations in the list on the dataset info view.
Allow validations to return full error messages by returning capitalized strings.
Validate presence of file path and Gnip rule.
Allow cancellation of pending imports.
Add support for format conversion to Gnip import worker.
Validate requested conversion against available conversions.