Allow maps to appear at any directory level

Before this change, the root `content/_index.md` file would always
render using `layouts/index.html` (which hard-coded the ability to
render maps), and it was not possible to render maps anywhere else.

Instead, make map rendering details a partial which can be invoked from
anywhere, and wire up a `map` layout that can be opted into with
`layout = "map"` in frontmatter. `layouts/index.html` also calls this
same partial, so they behave the same - we're just hard-coding that the
root layout should always be a map layout, just like any other map
layout can be.

Also, un-set the root Piscine layout - it's ignored, hugo always uses
`layouts/index.html` for the root layout, so stop pretending it uses a
module layout (which, incidentally, it doesn't).

Author: illicitonion

common-theme/layouts/_default/map.html

@@ -0,0 +1,3 @@
+{{ define "main" }}
+{{ partial "index.html" . }}
+{{ end }}

common-theme/layouts/index.html

@@ -1,28 +1,3 @@
 {{ define "main" }}
-  <article>
-    {{- .Scratch.Set "headerClass"
-      "c-page-header--splash"
-    }}
-    {{- partial "page-header.html" . }}
-    {{ with .Content }}
-      <section class="c-copy">
-        {{ . }}
-      </section>
-    {{ end }}
-    {{ if .Params.menus_to_map }}
-      {{ partial "map-menu.html" .Params.menus_to_map }}
-    {{ else if .Params.menus_to_map_for_courses }}
-      {{ partial "map-menu-for-courses.html" .Params.menus_to_map_for_courses }}
-    {{ else if .Params.map }}
-      {{ partial "map.html" . }}
-    {{ else if .Params.taxonomy_to_map }}
-      {{ partial "map-taxonomy.html" .Params.taxonomy_to_map }}
-    {{ else }}
-      <ol class="c-timeline c-timeline--card">
-        {{- range site.Menus.syllabus }}
-          <li class="c-timeline__entry">{{ partial "card.html" . }}</li>
-        {{- end }}
-      </ol>
-    {{ end }}
-  </article>
+{{ partial "index.html" . }}
 {{ end }}

common-theme/layouts/partials/index.html

@@ -0,0 +1,26 @@
+<article>
+{{- .Scratch.Set "headerClass"
+    "c-page-header--splash"
+}}
+{{- partial "page-header.html" . }}
+{{ with .Content }}
+    <section class="c-copy">
+    {{ . }}
+    </section>
+{{ end }}
+{{ if .Params.menus_to_map }}
+    {{ partial "map-menu.html" .Params.menus_to_map }}
+{{ else if .Params.map }}
+    {{ partial "map.html" . }}
+{{ else if .Params.menus_to_map_for_courses }}
+    {{ partial "map-menu-for-courses.html" .Params.menus_to_map_for_courses }}
+{{ else if .Params.taxonomy_to_map }}
+    {{ partial "map-taxonomy.html" .Params.taxonomy_to_map }}
+{{ else }}
+    <ol class="c-timeline c-timeline--card">
+    {{- range site.Menus.syllabus }}
+        <li class="c-timeline__entry">{{ partial "card.html" . }}</li>
+    {{- end }}
+    </ol>
+{{ end }}
+</article>

org-cyf-piscine/content/_index.md

@@ -1,7 +1,6 @@
 +++
 title = 'Piscine'
 description = 'In teams and on your own, build working software with tests. Explain your work to others.'
-layout = 'module'
 menu = ['syllabus', 'next steps']
 menus_to_map=['entry', 'sprints', 'assessment']
 +++