Add past releases

Author: dshevtsov

src/_data/core-releases.json

@@ -1,4 +1,3 @@
-
 {
     "2.4": {
         "releases": [
@@ -305,4 +304,4 @@
         ],
         "end-of-support": "2018-03-31"
     }
-}
+}

src/_data/toc/release.yml

@@ -1,6 +1,10 @@
 label: Release Information
 pages:
 
+  - label: Past releases
+    url: /release/
+    versionless: true
+
   - label: Upcoming releases
     url: /release/
     versionless: true

src/_includes/release-notes/core-releases.md

@@ -0,0 +1,35 @@
+{% assign releases = site.data.core-releases %}
+{% assign now_in_seconds = "now" | date: "%s" %}
+
+{% for minor_release in releases %}
+
+## {{ minor_release[0] }}
+{% if minor_release[1].end-of-support == 'not available yet' %}
+The date when support of the {{ minor_release[0] }} release line ends has not been set yet.
+{% else %}
+{% assign end_of_support_in_seconds = minor_release[1].end-of-support | date: "%s" %}
+{% if end_of_support_in_seconds < now_in_seconds %}
+Support for the {{ minor_release[0] }} release line ended on {{ end_of_support_in_seconds | date: "%B&nbsp;%e, %Y" }}.
+{% elsif end_of_support_in_seconds > now_in_seconds %}
+Support for the {{ minor_release[0] }} release line ends on {{ minor_release[1].end-of-support | date: "%B&nbsp;%e, %Y" }}.
+{% endif %}
+{% endif %}
+
+<table>
+  <thead>
+    <tr>
+      <th>Patch version</th>
+      <th>Release date</th>
+    </tr>
+  </thead>
+  <tbody>
+  {% for patch_release in minor_release[1].releases %}
+    <tr>
+        <td>{{ patch_release.tagName }}</td>
+        <td>{{ patch_release.publishedAt | date: "%B&nbsp;%e, %Y" }}</td>
+    </tr>
+  {% endfor %}<!-- patch_releases -->
+  </tbody>
+</table>
+
+{% endfor %} <!-- minor_releases -->

src/release/past-releases.md

@@ -0,0 +1,8 @@
+---
+title: Released versions
+group: release
+---
+
+This list of released verisons is applicable to both products {{ site.data.var.ce }} and {{ site.data.var.ee }}. It contains release dates for every minor or patch release, as well as the end of support dates for minor release lines. For conceptual details, refer to the [Lifecycle policy]({{ site.baseurl }}/release/lifecycle-policy.html).
+
+{% include release-notes/core-releases.md %}