Refactored stock data export to export initially missing data

[ypandit]

• Generate genotype from parent for V[0-9]{6} strains
• Export public & private comments for stock inventory
• Export of phenotype notes

[cybersiddhu]

I strongly suggests you not to add empty string to array.

push @array, '';

Do not do this from now on, absolutely not, there is no reason to justify that. In fact, just stop having this repeatedly. From now on, no more empty string anywhere.

[ypandit]

Code review:

• [x] Use autodie
• [ ] Use something like String::Trim
• [x] Try DBIx::Class::ResultClass::HashRefInflator for better performance
• [x] Always use catfile for building filepaths
• For empty strings (DO NOT push empty strings to array)
  • [ ] Use undef. Throws warnings for uninitialized value
  • [ ] Use NA. Have a subroutine to substitute NA with empty string.
  • [ ] String concatenation