metainfo: Use Endless Key brand

Modify metainfo with Endless Key brand as the new metainfo:
org.endlessos.Key.metainfo.xml.in.in

Fixes: #15

data/metainfo/meson.build

@@ -2,8 +2,8 @@ metainfo_dir = join_paths(datadir, 'metainfo')
 
 metainfo_file = i18n.merge_file(
     input: configure_file(
-        input: 'org.learningequality.Kolibri.metainfo.xml.in.in',
-        output: 'org.learningequality.Kolibri.metainfo.xml.in',
+        input: 'org.endlessos.Key.metainfo.xml.in.in',
+        output: 'org.endlessos.Key.metainfo.xml.in',
         configuration: kolibri_app_config
     ),
     output: base_application_id + '.metainfo.xml',

data/metainfo/org.endlessos.Key.metainfo.xml.in.in

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>@BASE_APPLICATION_ID@</id>
+  <name>Endless Key</name>
+  <developer_name>Endless OS Foundation</developer_name>
+  <summary>Offline education technology platform</summary>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>MIT</project_license>
+  <url type="homepage">https://www.endlessos.org/key</url>
+  <url type="donation">https://learningequality.org/donate/</url>
+  <url type="help">https://kolibri.readthedocs.io/en/latest/</url>
+  <url type="bugtracker">https://www.endlessos.org/key</url>
+  <url type="translate">https://learningequality.org/translate/</url>
+  <description>
+    <p>Endless Key makes high quality education technology available in low-resource communities such as rural schools, refugee camps, orphanages, non-formal school systems, and prison systems. Running on a wide variety of hardware, it enables offline access to a rich set of content and tools to support learners, coaches, and administrators.</p>
+  </description>
+  <launchable type="desktop-id">@[email protected]</launchable>
+  <screenshots>
+    <screenshot type="default">
+      <caption>Browsing content channels in Endless Key</caption>
+      <image type="source" width="1600" height="900">https://raw.githubusercontent.com/learningequality/kolibri-installer-gnome/master/doc/Screenshot-1.png</image>
+    </screenshot>
+  </screenshots>
+  <releases>
+  </releases>
+  <content_rating type="oars-1.1" />
+  <update_contact>info_at_learningequality.org</update_contact>
+  <translation type="gettext">kolibri-gnome</translation>
+  <compulsory_for_desktop>endless</compulsory_for_desktop>
+</component>