Make Page an interface

The main motivation of this commit is to add a `page.Page` interface to replace the very file-oriented `hugolib.Page` struct.
This is all a preparation step for issue  #5074, "pages from other data sources".

But this also fixes a set of annoying limitations, especially related to custom output formats, and shortcodes.

Most notable changes:

* The inner content of shortcodes using the `{{%` as the outer-most delimiter will now be sent to the content renderer, e.g. Blackfriday.
  This means that any markdown will partake in the global ToC and footnote context etc.
* The Custom Output formats are now "fully virtualized". This removes many of the current limitations.
* The taxonomy list type now has a reference to the `Page` object.
  This improves the taxonomy template `.Title` situation and make common template constructs much simpler.

See #5074
Fixes #5763
Fixes #5758
Fixes #5090
Fixes #5204
Fixes #4695
Fixes #5607
Fixes #5707
Fixes #5719
Fixes #3113
Fixes #5706
Fixes #5767
Fixes #5723
Fixes #5769
Fixes #5770
Fixes #5771
Fixes #5759
Fixes #5776
Fixes #5777
Fixes #5778

1 files changed, 6 insertions, 6 deletions

diff --git a/commands/new_content_test.go b/commands/new_content_test.go
index fb8bca7b4..5a55094d6 100644
--- a/commands/new_content_test.go
+++ b/commands/new_content_test.go
@@ -1,4 +1,4 @@
-// Copyright 2018 The Hugo Authors. All rights reserved.
+// Copyright 2019 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.
@@ -62,7 +62,7 @@ func TestDoNewSite_noerror_base_exists_but_empty(t *testing.T) {
 	_, fs := newTestCfg()
 	n := newNewSiteCmd()
 
-	require.NoError(t, fs.Source.MkdirAll(basepath, 777))
+	require.NoError(t, fs.Source.MkdirAll(basepath, 0777))
 
 	require.NoError(t, n.doNewSite(fs, basepath, false))
 }
@@ -72,7 +72,7 @@ func TestDoNewSite_error_base_exists(t *testing.T) {
 	_, fs := newTestCfg()
 	n := newNewSiteCmd()
 
-	require.NoError(t, fs.Source.MkdirAll(basepath, 777))
+	require.NoError(t, fs.Source.MkdirAll(basepath, 0777))
 	_, err := fs.Source.Create(filepath.Join(basepath, "foo"))
 	require.NoError(t, err)
 	// Since the directory already exists and isn't empty, expect an error
@@ -85,7 +85,7 @@ func TestDoNewSite_force_empty_dir(t *testing.T) {
 	_, fs := newTestCfg()
 	n := newNewSiteCmd()
 
-	require.NoError(t, fs.Source.MkdirAll(basepath, 777))
+	require.NoError(t, fs.Source.MkdirAll(basepath, 0777))
 
 	require.NoError(t, n.doNewSite(fs, basepath, true))
 
@@ -99,7 +99,7 @@ func TestDoNewSite_error_force_dir_inside_exists(t *testing.T) {
 
 	contentPath := filepath.Join(basepath, "content")
 
-	require.NoError(t, fs.Source.MkdirAll(contentPath, 777))
+	require.NoError(t, fs.Source.MkdirAll(contentPath, 0777))
 	require.Error(t, n.doNewSite(fs, basepath, true))
 }
 
@@ -109,7 +109,7 @@ func TestDoNewSite_error_force_config_inside_exists(t *testing.T) {
 	n := newNewSiteCmd()
 
 	configPath := filepath.Join(basepath, "config.toml")
-	require.NoError(t, fs.Source.MkdirAll(basepath, 777))
+	require.NoError(t, fs.Source.MkdirAll(basepath, 0777))
 	_, err := fs.Source.Create(configPath)
 	require.NoError(t, err)