ReadOnly Step Property for Backgrounds

Support ReadOnly step property for rtb size
Support ReadOnly for rtb
Pagination for Background documents, i.e. HLS/Caution/Note have pagebreaks
Pagination for Backgrounds; Pagelist items for Backgrounds; tabs & offset for backgrounds & minor general Callaway
PageList items for Background documents (HLRNO & HLSTAB) and CURDATE & CURTIME (for fnpnmp)

PROMS/Volian.Controls.Library/StepRTB.cs

@@ -444,7 +444,8 @@ namespace Volian.Controls.Library
 				}
 			}
 			RTBAPI.SetLineSpacing(this, RTBAPI.ParaSpacing.PFS_EXACT);
-			ReadOnly = VwMode == E_ViewMode.View || ActiveMode == false;
+			bool readOnlyStep = MyItemInfo == null || MyItemInfo.FormatStepData == null ? false : MyItemInfo.FormatStepData.ReadOnly;
+			ReadOnly = readOnlyStep || VwMode == E_ViewMode.View || ActiveMode == false;
 			AddRtfText(vlntxt.StartText);
 			//AddRtfStyles();
 			// set readonly based on initial modes, however, these may change if