Require there be a path.

Web/lib/MJB/Web/Controller/Dashboard.pm

@@ -428,6 +428,12 @@ sub do_blog_page ( $c ) {
     my $content  = $c->param('pageContent');
     my $headers  = $c->param('pageHeaders');
     
+    if ( ! $path ) {
+        $c->flash( error_message => "You must add a filepath for the HTML file." );
+        $c->redirect_to( $c->url_for( 'show_dashboard_blog_page', { id => $blog->id } ) );
+        return;
+    }
+
     my $jekyll = $c->jekyll($blog->domain->name);
 
     my $page = $jekyll->new_page( "/$path.markdown" );