docs: update calendar, add news item and link release notes for 19.1.8

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>

docs/index.html

@@ -16,6 +16,17 @@
 
 <h1>News</h1>
 
+<h2>October 21, 2019</h2>
+<p>
+<a href="relnotes/19.1.8.html">Mesa 19.1.8</a> is released.
+This is a bug-fix release.
+</p>
+<p>
+NOTE: It is anticipated that 19.1.8 will be the final release in the
+19.1 series. Users of 19.1 are encouraged to migrate to the 19.2
+series in order to obtain future fixes.
+</p>
+
 <h2>October 9, 2019</h2><p><a href="relnotes/19.2.1.html">Mesa 19.2.1</a> is released. This is a bug fix release.</p><h2>September 25, 2019</h2>
 <p>
 <a href="relnotes/19.2.0.html">Mesa 19.2.0</a> is released.
@@ -2690,4 +2701,4 @@ http://www.quake3arena.com/news/glopt.html
 
 </div>
 </body>
-</html>
+</html>

docs/release-calendar.html

@@ -60,13 +60,6 @@ if you'd like to nominate a patch in the next stable release.
 <th>Notes</th>
 </tr>
 <tr>
-<td rowspan="1">19.1</td>
-<td>2019-10-01</td>
-<td>19.1.8</td>
-<td>Juan A. Suarez</td>
-<td>Last planned 19.1.x release</td>
-</tr>
-<tr>
 <td rowspan="3">19.2</td>
 <td>2019-10-23</td>
 <td>19.2.2</td>

docs/relnotes.html

@@ -21,6 +21,7 @@ The release notes summarize what's new or changed in each Mesa release.
 </p>
 
 <ul>
+</li><li><a href="relnotes/19.1.8.html">19.1.8 release notes</a>
 <li><a href="relnotes/19.2.1.html">19.2.1 release notes</a></li><li><a href="relnotes/19.2.0.html">19.2.0 release notes</a>
 </li><li><a href="relnotes/19.1.7.html">19.1.7 release notes</a>
 </li><li><a href="relnotes/19.1.6.html">19.1.6 release notes</a>
@@ -302,4 +303,4 @@ Versions of Mesa prior to 6.4 are summarized in the
 
 </div>
 </body>
-</html>
+</html>