Fixed input and output of constant photolysis rates

[AlfredMayhew]

Following discussion in #372.

I have also removed the ignoring of the first line in the photolysisConstant.config file, when read by inputFunctions.f90.

Changing the inputFunctions.f90 file as discussed in #372 resulted in issues with the outputFunctions.f90 file, which I believe I have also fixed. It's worth noting that when using at least one constant J value only the constant J values are output in the photolysisRates.output file. I assumed this was by design since the photolysisConstant.config overrides other photolysis rates and sets them to 0 (even if they are specified as constrained), e.g. giving a value of 1E-5 for J1 in photolysisConstant.config and listing J2 in photolysisConstrained.config will result in a model where J1 = 1E-5 throughout and J2 = 0, regardless of what the J2 constraint file says.

Hopefully this is all OK and makes sense, let me know if there's anything else that needs changing.

[codecov[bot]]

Codecov Report

Merging #467 (3aa07fb) into master (afc3896) will increase coverage by 0.02%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #467      +/-   ##
==========================================
+ Coverage   55.37%   55.40%   +0.02%     
==========================================
  Files          17       17              
  Lines        2046     2045       -1     
==========================================
  Hits         1133     1133              
+ Misses        913      912       -1     

Flag	Coverage Δ
build	52.27% <0.00%> (+0.03%)	:arrow_up:
unittests	31.62% <0.00%> (+0.01%)	:arrow_up:

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Impacted Files	Coverage Δ
src/inputFunctions.f90	36.13% <0.00%> (+0.05%)	:arrow_up:
src/outputFunctions.f90	50.00% <0.00%> (ø)

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[rs028]

Are we happy to merge this? Looks all right to me.

[spco]

Looks good to me!