updated mongo driver dependencies to v2

# Conflicts:
#	exerr/constructor.go
#	exerr/dataCategory.go
#	exerr/dataSeverity.go
#	exerr/dataType.go
#	exerr/exerr.go
#	go.mod
#	mongoext/registry.go
#	reflectext/primStrSer.go
#	rfctime/date.go
#	rfctime/rfc3339.go
#	rfctime/rfc3339Nano.go
#	rfctime/seconds.go
#	rfctime/unix.go
#	rfctime/unixMilli.go
#	rfctime/unixNano.go
#	wmo/collection.go
#	wmo/queryInsert.go

wpdf/wpdfTable.go

@@ -1,11 +1,12 @@
 package wpdf
 
 import (
+	"regexp"
+	"strconv"
+
 	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
-	"regexp"
-	"strconv"
 )
 
 // Column specifier:
@@ -298,7 +299,7 @@ func (b *TableBuilder) calculateColumns() []float64 {
 
 	if remainingWidth > 0.01 {
 		rmSub := 0.0
-		for i, _ := range columnDef {
+		for i := range columnDef {
 			if frColumnWeights[i] != 0 {
 				addW := (remainingWidth / float64(frColumnWidthCount)) * frColumnWeights[i]
 				rmSub += addW