Rename taxonomy kinds from taxonomy to term, taxonomyTerm to taxonomy

And we have taken great measures to limit potential site breakage:

* For `disableKinds` and `outputs` we try to map from old to new values if possible, if not we print an ERROR that can be toggled off if not relevant.
* The layout lookup is mostly compatible with more options for the new `term` kind.

That leaves:

* Where queries in site.Pages using taxonomy/taxonomyTerm Kind values as filter.
* Other places where these kind value are used in the templates (classes etc.)

Fixes #6911
Fixes #7395

1 files changed, 21 insertions, 0 deletions

diff --git a/common/constants/constants.go b/common/constants/constants.go
new file mode 100644
index 000000000..25bd7c758
--- /dev/null
+++ b/common/constants/constants.go
@@ -0,0 +1,21 @@
+// Copyright 2020 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package constants
+
+// Error IDs.
+// Do not change these values.
+const (
+	ErrIDAmbigousDisableKindTaxonomy = "error-disable-taxonomy"
+	ErrIDAmbigousOutputKindTaxonomy  = "error-output-taxonomy"
+)