Install the error web pages

ipa-server/xmlrpc-server/Makefile

@@ -4,8 +4,10 @@ all: ;
 
 install:
 	-mkdir -p $(SHAREDIR)
+	-mkdir -p $(SHAREDIR)/../html
 	install -m 644 *.py $(SHAREDIR)
 	install -m 644 ipa.conf $(SHAREDIR)/..
+	install -m 644 *.html $(SHAREDIR)/../html
 
 clean:
 	rm -f *~ *.pyc