Show status for enabled plugins in the WebUI as 'Enabled'

At the moment no status is shown for enabled plugins on the
PluginListScreen. Some users may be confused by the missing status
information.

Show the status for enabled plugins as 'Enabled'. This is also
consistent with the status that is shown for enabled plugins by the
'gerrit plugin ls' SSH command.

Change-Id: I369393ef902834d272cbf17ea36dbe83f809d3aa
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/AdminConstants.java

@@ -109,6 +109,7 @@ public interface AdminConstants extends Constants {
   String projectAdminTabAccess();
 
   String plugins();
+  String pluginEnabled();
   String pluginDisabled();
 
   String columnPluginName();

gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/AdminConstants.properties

@@ -89,6 +89,7 @@ projectAdminTabBranches = Branches
 projectAdminTabAccess = Access
 
 plugins = Plugins
+pluginEnabled = Enabled
 pluginDisabled = Disabled
 columnPluginName = Plugin Name
 columnPluginVersion = Version

gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/PluginListScreen.java

@@ -92,9 +92,8 @@ public class PluginListScreen extends PluginScreen {
                 + plugin.name() + "/")));
       }
       table.setText(row, 2, plugin.version());
-      if (plugin.isDisabled()) {
-        table.setText(row, 3, Util.C.pluginDisabled());
-      }
+      table.setText(row, 3, plugin.isDisabled() ? Util.C.pluginDisabled()
+          : Util.C.pluginEnabled());
 
       final FlexCellFormatter fmt = table.getFlexCellFormatter();
       fmt.addStyleName(row, 1, Gerrit.RESOURCES.css().dataCell());