* IDEMPIERE-4724
allow to concatenate parts at import
allow to prefix them which also is necessary to separate them when concatenating
allow to concatenate callouts and provide sort of parameters
* Update CalloutEngine.java
minor - typos in comments
* Update ImpFormatRow.java
is better to raise the exception when the callout cannot be found - the results can be unexpected for end users if the callouts are not called
Co-authored-by: Carlos Ruiz <carg67@gmail.com>