Merge branch 'fix-datetime-ind' into 'etiona'

add DATA/indiciator-datetime

See merge request trisquel/package-helpers!277

helpers/DATA/indicator-datetime/launch-time-admin-in-mate.patch

+--- src/actions-live.cpp	2017-08-29 08:36:12.000000000 -0700
++++ src/actions-live.cpp  	2019-09-10 13:06:26.971791147 -0700
+@@ -82,6 +82,9 @@
+                 if (!g_strcmp0 (desktop_names[i], "Unity")) {
+                     result = LiveActions::UNITY7;
+                     break;
++                } else if (!g_strcmp0 (desktop_names[i], "MATE")) {
++                    result = LiveActions::MATE;
++                    break;
+                 }
+             }
+             g_strfreev (desktop_names);
+@@ -144,6 +147,9 @@
+     case LiveActions::UNITY7:
+         execute_command("unity-control-center datetime");
+         break;
++    case LiveActions::MATE:
++        execute_command("time-admin");
++        break;
+     default:
+         execute_command("gnome-control-center datetime");
+     }