standard.clearFileCache
Clears the local file cache.
Important: 
This feature is provided for development and debug purpose, and must not be used in a production environment.
Syntax
ui.Interface.frontCall("standard", "clearFileCache",
  [], [result]) 
- result - The execution status (
TRUE=success,FALSE=error). 
Usage
The "clearFileCache" front call removes all the local resource files cached by
the front-end.
The resource files (like images, font files) transmitted by the runtime system to the front-end are automatically cached on the front-end workstation.
This front call is only supported by the GDC front-end, and should only be used in development or for debug purpose.