Provide configuration option for the CONTENTdm nickname associates with full text

[mjordan]

CONTENTdm can assign any nickname to an object's full text/OCR data. The CONTENTdm Newspaper writer contains logic to account for the two nicknames we've encountered so far, 'full' and 'fullte', but I've just encountered a newspaper where the nickname is 'audien'.

Instead of adding more if/else logic chasing these unpredictable aspects of CONTENTdm's internals, MIK should allow the correct nickname to be defined in the .ini file. With less than 5 newspapers to go in our migration from CONTENTdm, it's unlikely we'll add this feature, but this issue should serve as a placeholder for this edge case.

[MarcusBarnes]

@mjordan Thanks for this.