Cite Arxiv does not support bibcode

[GlazerMann]

This has to be done in final tidy since bibcode might lead to doi pmid etc

[codecov]

Codecov Report

Merging #717 into master will decrease coverage by 1.57%.
The diff coverage is 50%.

@@             Coverage Diff              @@
##             master     #717      +/-   ##
============================================
- Coverage     70.09%   68.51%   -1.58%     
- Complexity     1638     1640       +2     
============================================
  Files            12       12              
  Lines          3320     3322       +2     
============================================
- Hits           2327     2276      -51     
- Misses          993     1046      +53

Impacted Files	Coverage Δ	Complexity Δ
Template.php	73.81% <50%> (-2.57%)	1460 <0> (+2)
expandFns.php	90.97% <0%> (+0.69%)	0% <0%> (ø)	⬇️

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[ms609]

Can we add a test please?

Tests added