Item9790: Bulk register should accept real table headin

Strip out html markup.  Wiki markup is stripped from the next option:

Also, it was not working for fields like 'InstantMessaging (IM)',  so
call the standard form title processor to recover a field name.

TopicUserMappingContrib/data/System/BulkRegistration.txt

@@ -1,4 +1,4 @@
-%META:TOPICINFO{author="ProjectContributor" comment="" date="1456631653" format="1.1" version="1"}%
+%META:TOPICINFO{author="ProjectContributor" comment="" date="1456768091" format="1.1" version="1"}%
 %META:TOPICPARENT{name="AdminToolsCategory"}%
 ---+ Bulk Registration
 
@@ -55,7 +55,7 @@ The following should be inserted into your %REGISTERTOPIC% as a table. This is t
 *Usage:*
    1 Copy this text to your clipboard
    1 Click through and paste this on %REGISTERTOPIC%.
-   1 Add and customize entries, save table. Note that the first row must not contain bolded entries, so don't apply any formatting.
+   1 Add and customize entries, save table.
    1 Return here
 
 #CustomizingUserData

core/lib/Foswiki/UI/Register.pm

@@ -16,6 +16,7 @@ use Assert;
 use Error qw( :try );
 
 use Foswiki                ();
+use Foswiki::Form          ();
 use Foswiki::LoginManager  ();
 use Foswiki::OopsException ();
 use Foswiki::Sandbox       ();
@@ -395,6 +396,8 @@ sub bulkRegister {
             else {
                 foreach my $field ( split( /\s*\|\s*/, $1 ) ) {
                     $field =~ s/^[\s*]*(.*?)[\s*]*$/$1/;
+                    $field =~ s/<.*?>//g;    #strip any html markup from heading
+                    $field = Foswiki::Form::fieldTitle2FieldName($field);
                     push( @fields, $field );
                 }
                 $gotHdr = 1;