Implement RFE "Non Required Fields on User Registration". Associated upgrade.

Minor streamlining of profile field listing methods.

WebGUI::Operation::Profile::getRequiredProfileFields is now deprecated,
because it's specific enough to be not significantly more useful than
WebGUI::ProfileField::getRequiredFields, and because with this change
nothing in core uses it anymore.

docs/changelog/7.x.x.txt

@@ -15,6 +15,7 @@
  - fix: A minor bug in the default viewPurchaseHistory template
  - fix: Thread determination of "current" Post, and shortcuts to non-Thread Posts
  - fix: make handling of profile field possible values slightly more robust
+ - RFE: non-required fields shown on user registration
 
 7.2.1
  - Made a change to version tag commits to deal with unusually long commit

docs/upgrades/upgrade_7.2.1-7.2.2.pl

@@ -21,6 +21,7 @@ my $quiet; # this line required
 my $session = start(); # this line required
 
 # upgrade functions go here
+addProfileFieldsOnRegistration($session);
 
 finish($session); # this line required
 
@@ -53,6 +54,21 @@ sub start {
 	return $session;
 }
 
+#-------------------------------------------------
+sub addProfileFieldsOnRegistration {
+	my $session = shift;
+	print "\tAdding showAtRegistration to userProfileField rows.\n" unless $quiet;
+
+	$session->db->write($_) for(<<'EOT',
+  ALTER TABLE userProfileField
+   ADD COLUMN showAtRegistration int(11) NOT NULL default '0'
+EOT
+				    <<'EOT',
+  UPDATE userProfileField SET showAtRegistration = required
+EOT
+				   );
+}
+
 #-------------------------------------------------
 sub finish {
 	my $session = shift;