api/v3 Adding pagination support for the fact-names endpoint

Including the order_by, limit and offset parameters to the function
fact_names. Documentation and tests show that it does support
the standard pagination functions
api/v3 Standardizing indentation on function calls/definitions

For the function calls and definitions where the parameter list is too
long and need to be appended to new lines, having each parameter in its
own line.

This standardizes the coding style and is compliant to python coding
best practices