forget publisher=Amazon when droppping book url

[GlazerMann]

No description provided.

[codecov]

Codecov Report

Merging #823 into master will increase coverage by 5.56%.
The diff coverage is 50%.

@@             Coverage Diff              @@
##             master     #823      +/-   ##
============================================
+ Coverage     70.22%   75.78%   +5.56%     
- Complexity     1632     1906     +274     
============================================
  Files            13       13              
  Lines          3446     4114     +668     
============================================
+ Hits           2420     3118     +698     
+ Misses         1026      996      -30

Impacted Files	Coverage Δ	Complexity Δ
Template.php	82.98% <50%> (+6.3%)	1722 <0> (+273)	⬆️
Parameter.php	100% <0%> (ø)	11% <0%> (+1%)	⬆️
api_handlers/zotero.php	85.32% <0%> (+11.24%)	0% <0%> (ø)	⬇️

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[ms609]

Is it possible to amend an existing test so that the forgettery is tested?

[ms609]

Should amazon be added to "Bad publishers" in bad_data.php too?

[GlazerMann]

@ms609 test added

I think this is donme