Change wiki requests to use Java 9 HttpClient

[midgleyc]

Work on https://kolmafia.us/threads/migration-from-http-1-1-to-http-2-0.27303/, though less ambitious this time.

Lets us get rid of the inifinite loop and manual redirect handling.

Fix some of the wiki links for items.

Tested using checkPlurals.

[codecov]

Codecov Report

Merging #634 (9438bbe) into main (a8c1e07) will decrease coverage by 0.00%.
The diff coverage is 16.66%.

@@             Coverage Diff              @@
##               main     #634      +/-   ##
============================================
- Coverage     21.41%   21.41%   -0.01%     
- Complexity     9214     9215       +1     
============================================
  Files           999      999              
  Lines        156168   156171       +3     
  Branches      34725    34724       -1     
============================================
  Hits          33445    33445              
- Misses       116524   116528       +4     
+ Partials       6199     6198       -1     

Impacted Files	Coverage Δ
...ourceforge/kolmafia/persistence/DebugDatabase.java	9.96% <0.00%> (+0.01%)	⬆️
.../sourceforge/kolmafia/utilities/HttpUtilities.java	77.77% <60.00%> (-22.23%)	⬇️
...rceforge/kolmafia/persistence/HolidayDatabase.java	34.57% <0.00%> (-0.71%)	⬇️

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