Don't manually set list of allowed runners for kickoff

The RunnerManager will read the enabled plugins from the krunnerrc file.
This way enabled plugins are configurable and consistent with KRunner.

applets/kickoff/package/contents/config/main.xml

@@ -30,14 +30,6 @@
       <label>List of applications at the top of the "Computer" tab.</label>
       <default>systemsettings.desktop,org.kde.kinfocenter.desktop,org.kde.discover.desktop</default>
     </entry>
-    <entry name="useExtraRunners" type="Bool">
-      <label>Whether to use additional KRunner plugins to produce results in the search.</label>
-      <default>true</default>
-    </entry>
-    <entry name="runners" type="StringList">
-      <label>The plugin id's of additional KRunner plugins to use. Only used if useExtraRunners is true.</label>
-      <default>shell,bookmarks,recentdocuments,locations,baloosearch</default>
-    </entry>
 
     <entry name="menuItems" type="StringList">
       <label>The menu tabs to show.</label>

applets/kickoff/package/contents/ui/ConfigGeneral.qml

@@ -29,7 +29,6 @@ ColumnLayout {
     property string cfg_icon: plasmoid.configuration.icon
     property alias cfg_switchTabsOnHover: switchTabsOnHoverCheckbox.checked
     property alias cfg_showAppsByName: showApplicationsByNameCheckbox.checked
-    property alias cfg_useExtraRunners: useExtraRunners.checked
     property alias cfg_alphaSort: alphaSort.checked
     property alias cfg_menuItems: configButtons.menuItems
 
@@ -101,9 +100,10 @@ ColumnLayout {
             text: i18n("Show applications by name")
         }
 
-        CheckBox {
-            id: useExtraRunners
-            text: i18n("Expand search to bookmarks, files and emails")
+        Button {
+            icon.name: "settings-configure"
+            text: i18n("Configure enabled search plugins")
+            onPressed: KQuickAddons.KCMShell.open(["kcm_plasmasearch"])
         }
 
         CheckBox {

applets/kickoff/package/contents/ui/SearchView.qml

@@ -49,20 +49,8 @@ Item {
 
     Kicker.RunnerModel {
         id: runnerModel
-
         appletInterface: plasmoid
-
-        runners: {
-            var runners = ["desktopsessions", "services", "places",
-                           "PowerDevil", "calculator", "unitconverter"];
-
-            if (plasmoid.configuration.useExtraRunners) {
-                runners = runners.concat(plasmoid.configuration.runners);
-            }
-            return runners;
-        }
         mergeResults: true
-
         favoritesModel: globalFavorites
     }
 

kcms/runners/kcm.cpp

@@ -60,7 +60,7 @@ SearchConfigModule::SearchConfigModule(QWidget* parent, const QVariantList& args
 
     QHBoxLayout *headerLayout = new QHBoxLayout(this);
 
-    QLabel *label = new QLabel(i18n("Enable or disable KRunner plugins:"));
+    QLabel *label = new QLabel(i18n("Enable or disable plugins (used in KRunner and Application Launcher)"));
 
     m_clearHistoryButton = new QPushButton(i18n("Clear History"));
     m_clearHistoryButton->setIcon(QIcon::fromTheme(isRightToLeft() ? QStringLiteral("edit-clear-locationbar-ltr")