Colorise Skill Levels

[WeaverThree]

This started because I wanted a way to easily distinguish skill levels in Tech List of the Repair Panel:

This followed on to the repair section of the Warehouse:

And the refit selector:

And then on to non-techs, we have the Doctor List, which probably needs to be sorted by skill as well but who has that many doctors?

And then it was on to the rest of the places skill shows up in the program:

Of course, in the Personnel List, things can become a bit overboard with row highlights:

But in a week of playing with it, I didn't have a list nearly that bad and I don't think it works out too bad even if you do.

Of course, the colors are customizable. I believe these are reasonable defaults, though:

Along the way, I also cleaned up a fair bit of code to use StringBuilders, better HTML, better case statements, and ReportingUtilities.messageSurroundedBySpanWithColor() and such.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 10.44%. Comparing base (4a9cce8) to head (b9491ac).
Report is 42 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##             master    #5053    +/-   ##
==========================================
  Coverage     10.43%   10.44%            
- Complexity     6032     6038     +6     
==========================================
  Files           952      952            
  Lines        133878   133986   +108     
  Branches      19436    19432     -4     
==========================================
+ Hits          13976    13989    +13     
- Misses       118560   118655    +95     
  Partials       1342     1342            

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[IllianiCBT]

So one point of feedback, before I review this properly: as a rule we use green to denote 'good' and red to denote 'bad'. While I see why you chose this scale, I think flipping the colors would be better. Purple for Elite is 10/10 though, let's keep that.

[IllianiCBT]

A couple of questions, but nothing that'll stop this from being merged. :)

[WeaverThree]

For the colors, does this look good? @IllianiCBT

[IllianiCBT]

Perfect! :)