Make # survice Url cleaning

To enable anchors in Urls.

Fixes #888

helpers/path.go

@@ -92,7 +92,7 @@ func UnicodeSanitize(s string) string {
 	target := make([]rune, 0, len(source))
 
 	for _, r := range source {
-		if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '.' || r == '/' || r == '_' || r == '-' {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '.' || r == '/' || r == '_' || r == '-' || r == '#' {
 			target = append(target, r)
 		}
 	}

hugolib/menu_test.go

@@ -50,6 +50,10 @@ const (
 	name = "Tax RSS"
     url = "/two/key.xml"
 	identifier="xml"
+[[menu.hash]]
+   name = "Tax With #"
+   url = "/resource#anchor"
+   identifier="hash"
 [[menu.unicode]]
    name = "Unicode Russian"
    identifier = "unicode-russian"
@@ -262,6 +266,18 @@ func TestPageMenu(t *testing.T) {
 
 }
 
+// issue #888
+func TestMenuWithHashInUrl(t *testing.T) {
+	ts := setupMenuTests(t, MENU_PAGE_SOURCES)
+	defer resetMenuTestState(ts)
+
+	me := ts.findTestMenuEntryById("hash", "hash")
+
+	assert.NotNil(t, me)
+
+	assert.Equal(t, "/Zoo/resource/#anchor", me.Url)
+}
+
 // issue #719
 func TestMenuWithUnicodeUrls(t *testing.T) {
 	for _, uglyUrls := range []bool{true, false} {