STIX preivew images

• A tutorial on how to use the web imaging tool can be found at the link below:
  • https://docs.google.com/presentation/d/18ULVn3Ted-eCYrSDvtKju7PP-obdcfrhR92RRK-ByR0/edit?usp=sharing
• IDL scripts used to create STIX preview images can be found at the link below
  • https://datacenter.stix.i4ds.net/pub/misc/stix_imaging/