[gnome-software/gnome-3-26] Release version 3.26.8

[Kalev Lember <klember src gnome org>]

commit 7e20a1022e3689e1e422e72d766f5e6a7f7cd87c
Author: Kalev Lember <klember redhat com>
Date:   Tue Apr 10 11:52:05 2018 +0200

    Release version 3.26.8

 NEWS                                           | 11 +++++++++++
 data/appdata/org.gnome.Software.appdata.xml.in | 12 ++++++++++++
 2 files changed, 23 insertions(+)
---
diff --git a/NEWS b/NEWS
index 1b1ece88..cd3d1f74 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+Version 3.26.8
+~~~~~~~~~~~~~~
+Released: 2018-04-10
+
+This is a stable release with the following changes:
+ * Fix an issue with remove buttons being incorrectly set as insensitive on the
+   installed page
+ * Don't use destructive action class for update buttons
+
+This release also updates translations.
+
 Version 3.26.7
 ~~~~~~~~~~~~~~
 Released: 2018-03-02
diff --git a/data/appdata/org.gnome.Software.appdata.xml.in b/data/appdata/org.gnome.Software.appdata.xml.in
index 732a6dcb..831f6fe2 100644
--- a/data/appdata/org.gnome.Software.appdata.xml.in
+++ b/data/appdata/org.gnome.Software.appdata.xml.in
@@ -46,6 +46,18 @@
    Validate with `appstream-util validate *.appdata.xml`
   -->
   <releases>
+    <release date="2018-04-10" version="3.26.8">
+      <description>
+        <p>
+          This is a stable release with the following changes:
+        </p>
+        <ul>
+          <li>Fix an issue with remove buttons being incorrectly set as insensitive on the installed 
page</li>
+          <li>Don't use destructive action class for update buttons</li>
+        </ul>
+        <p>This release also updates translations.</p>
+      </description>
+    </release>
     <release date="2018-03-02" version="3.26.7">
       <description>
         <p>