Ferreteria/v0.5/portrow/disp/dual

see 2022/05/30/more data-class rubberducking for a lot of probably-unnecessary thought that went into this

About

The DisplayRowsDual class is designed to be capable of showing multiple records from a rowset as well as the default single-row-per-page mode.

Required Methods

(listing not necessarily complete)

• Config:
  • RenderRows_head() : string (this should probably be renamed...)