Issues reported by Alex

[jinlong25]

• if a package is loaded or installed, write a short comment what this package is doing and what it is needed for
• describe functions in a meaningful way. Example "Icon Counter", "Icon List Getter" etc. it is not completely clear what these functions do. It may be obvious to you and to some extend me. Someone new to CatScan and CatAnalysis will have a hard time figuring things out.
• The function "Icon List Getter" has a big "FIX LATER!!" in it. What is going on here?
• Abbreviations need to be explained, e.g., OSM
• Some functions do not have any explanation, e.g., "description_getter"
• The indentation of some of the functions seems to be off. This makes is much harder to read.