:sparkles: Implement Page bundling and image handling

This commit is not the smallest in Hugo's history.

Some hightlights include:

* Page bundles (for complete articles, keeping images and content together etc.).
* Bundled images can be processed in as many versions/sizes as you need with the three methods `Resize`, `Fill` and `Fit`.
* Processed images are cached inside `resources/_gen/images` (default) in your project.
* Symbolic links (both files and dirs) are now allowed anywhere inside /content
* A new table based build summary
* The "Total in nn ms" now reports the total including the handling of the files inside /static. So if it now reports more than you're used to, it is just **more real** and probably faster than before (see below).

A site building  benchmark run compared to `v0.31.1` shows that this should be slightly faster and use less memory:

```bash
▶ ./benchSite.sh "TOML,num_langs=.*,num_root_sections=5,num_pages=(500|1000),tags_per_page=5,shortcodes,render"

benchmark                                                                                                         old ns/op     new ns/op     delta
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      101785785     78067944      -23.30%
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     185481057     149159919     -19.58%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      103149918     85679409      -16.94%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     203515478     169208775     -16.86%

benchmark                                                                                                         old allocs     new allocs     delta
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      532464         391539         -26.47%
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     1056549        772702         -26.87%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      555974         406630         -26.86%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     1086545        789922         -27.30%

benchmark                                                                                                         old bytes     new bytes     delta
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      53243246      43598155      -18.12%
BenchmarkSiteBuilding/TOML,num_langs=1,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     105811617     86087116      -18.64%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=500,tags_per_page=5,shortcodes,render-4      54558852      44545097      -18.35%
BenchmarkSiteBuilding/TOML,num_langs=3,num_root_sections=5,num_pages=1000,tags_per_page=5,shortcodes,render-4     106903858     86978413      -18.64%
```

Fixes #3651
Closes #3158
Fixes #1014
Closes #2021
Fixes #1240
Updates #3757

1 files changed, 18 insertions, 17 deletions

diff --git a/commands/new.go b/commands/new.go
index b30c49aa2..974bb4ae3 100644
--- a/commands/new.go
+++ b/commands/new.go
@@ -86,21 +86,19 @@ as you see fit.`,
 
 // NewContent adds new content to a Hugo site.
 func NewContent(cmd *cobra.Command, args []string) error {
-	cfg, err := InitializeConfig()
-
-	if err != nil {
-		return err
+	cfgInit := func(c *commandeer) error {
+		if cmd.Flags().Changed("editor") {
+			c.Set("newContentEditor", contentEditor)
+		}
+		return nil
 	}
 
-	c, err := newCommandeer(cfg)
+	c, err := InitializeConfig(false, cfgInit)
+
 	if err != nil {
 		return err
 	}
 
-	if cmd.Flags().Changed("editor") {
-		c.Set("newContentEditor", contentEditor)
-	}
-
 	if len(args) < 1 {
 		return newUserError("path needs to be provided")
 	}
@@ -115,6 +113,8 @@ func NewContent(cmd *cobra.Command, args []string) error {
 		kind = contentType
 	}
 
+	cfg := c.DepsCfg
+
 	ps, err := helpers.NewPathSpec(cfg.Fs, cfg.Cfg)
 	if err != nil {
 		return err
@@ -130,7 +130,7 @@ func NewContent(cmd *cobra.Command, args []string) error {
 			return nil, err
 		}
 
-		if err := Hugo.Build(hugolib.BuildCfg{SkipRender: true, PrintStats: false}); err != nil {
+		if err := Hugo.Build(hugolib.BuildCfg{SkipRender: true}); err != nil {
 			return nil, err
 		}
 
@@ -240,7 +240,7 @@ func NewSite(cmd *cobra.Command, args []string) error {
 
 // NewTheme creates a new Hugo theme.
 func NewTheme(cmd *cobra.Command, args []string) error {
-	cfg, err := InitializeConfig()
+	c, err := InitializeConfig(false, nil)
 
 	if err != nil {
 		return err
@@ -250,14 +250,11 @@ func NewTheme(cmd *cobra.Command, args []string) error {
 		return newUserError("theme name needs to be provided")
 	}
 
-	c, err := newCommandeer(cfg)
-	if err != nil {
-		return err
-	}
-
 	createpath := c.PathSpec().AbsPathify(filepath.Join(c.Cfg.GetString("themesDir"), args[0]))
 	jww.INFO.Println("creating theme at", createpath)
 
+	cfg := c.DepsCfg
+
 	if x, _ := helpers.Exists(createpath, cfg.Fs.Source); x {
 		return newUserError(createpath, "already exists")
 	}
@@ -375,7 +372,11 @@ func newContentPathSection(path string) (string, string) {
 	var section string
 	// assume the first directory is the section (kind)
 	if strings.Contains(createpath[1:], helpers.FilePathSeparator) {
-		section = helpers.GuessSection(createpath)
+		parts := strings.Split(strings.TrimPrefix(createpath, helpers.FilePathSeparator), helpers.FilePathSeparator)
+		if len(parts) > 0 {
+			section = parts[0]
+		}
+
 	}
 
 	return createpath, section