Retrieve constant value by name

Get constant value using the name (string) of the constant, latest version by default.

This does not use the same deprecated methods than "Get Constant By Name" so is safe to use with newer Appian versions

Enables two functions: getconstantvaluebyname(constantName) getconstantvaluebynameandversion(constantName, versionInt)

Both return the value of the constant for the latest version or the version indicated (any type) for the given constant name.

#1 Typo corrected #2 GNU GPL license removed