Refactor i18n structure, remove layouts, add slides

Yep, this commit is too big big I didn't want to take the trouble of splitting
it now.

- _config.yml translation keys are now simetrical on the entitiy: articles,
pastebins, tils, slides, etc.;
- _posts were moved to _articles: the _posts collection had special treatment in
Jekyll which I wanted to avoid;
- the filtering of entries for the Atom feed is now done inside the
_includes/feed.atom file instead of every feed file;
- all entities are now dealt with using the pluralized name: articles,
pastebins, tils, slides. No more inconsistencies on the key names, they now
should only make sense as the translation value on the dictionary;
- add base reveal.js infrastruture, with Jekyll generating the listing page and
nothing else.

2 files changed, 18 insertions, 2 deletions

diff --git a/_includes/feed.atom b/_includes/feed.atom
index 511611f..53a0897 100644
--- a/_includes/feed.atom
+++ b/_includes/feed.atom
@@ -5,14 +5,15 @@
   <id>{{ page.url | absolute_url | xml_escape }}</id>
 
   <title>{{ site.title | xml_escape }}</title>
-  <subtitle>{{ site.t.feed.title[include.kind][include.lang] | smartify | xml_escape }}</subtitle>
+  <subtitle>{{ site.t[include.kind].feed.title[include.lang] | smartify | xml_escape }}</subtitle>
 
   <author>
     <name>{{ site.author.name | xml_escape }}</name>
     <email>{{ site.author.email | xml_escape }}</email>
   </author>
 
-  {% for entry in include.entries %}
+  {% assign entries = include.entries | where:"lang", page.lang | sort: "date" | reverse %}
+  {% for entry in entries %}
     <entry xml:lang="{{ entry.lang }}">
       <title type="html">{{ entry.title | smartify | strip_html | normalize_whitespace | xml_escape }}</title>
       <link href="{{ entry.url | absolute_url }}" rel="alternate" type="text/html" title="{{ entry.title | xml_escape }}" />
diff --git a/_includes/link-listing.html b/_includes/link-listing.html
new file mode 100644
index 0000000..2828efb
--- /dev/null
+++ b/_includes/link-listing.html
@@ -0,0 +1,15 @@
+<h2>
+  {{ site.t[include.kind].listing[page.lang] }}
+  <a href="{% link {{ site.t[include.kind].feed.url[page.lang] }} %}">
+    <img class="simple-icon" src="/images/atom.svg" alt="{{ site.t.alt.atom[page.lang] }}" />
+  </a>
+</h2>
+
+<ul>
+  {% assign entries = include.entries | where:"lang", page.lang | sort: "date" | reverse %}
+  {% for entry in entries %}
+    <li>
+      <a href="{{ entry.url | relative_url }}">{{ entry.title | escape }}</a> - {% include i18n-date.html date=entry.date %}
+    </li>
+  {% endfor %}
+</ul>