Plugins: Enable catalog management link to gcom (#34673) (#34811)

* click out to gcom when config enabled

* set to false

* fix styling for uninstall

* remove advertising config + simplify callout URL

* add entry to configuration.md

* update config name

* update lingo

(cherry picked from commit c7b58fe186)

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

pkg/setting/setting.go

@@ -253,15 +253,16 @@ type Cfg struct {
 	// CSPTemplate contains the Content Security Policy template.
 	CSPTemplate string
 
-	TempDataLifetime         time.Duration
-	PluginsEnableAlpha       bool
-	PluginsAppsSkipVerifyTLS bool
-	PluginSettings           PluginSettings
-	PluginsAllowUnsigned     []string
-	PluginCatalogURL         string
-	PluginAdminEnabled       bool
-	DisableSanitizeHtml      bool
-	EnterpriseLicensePath    string
+	TempDataLifetime                 time.Duration
+	PluginsEnableAlpha               bool
+	PluginsAppsSkipVerifyTLS         bool
+	PluginSettings                   PluginSettings
+	PluginsAllowUnsigned             []string
+	PluginCatalogURL                 string
+	PluginAdminEnabled               bool
+	PluginAdminExternalManageEnabled bool
+	DisableSanitizeHtml              bool
+	EnterpriseLicensePath            string
 
 	// Metrics
 	MetricsEndpointEnabled           bool
@@ -891,6 +892,7 @@ func (cfg *Cfg) Load(args *CommandLineArgs) error {
 	}
 	cfg.PluginCatalogURL = pluginsSection.Key("plugin_catalog_url").MustString("https://grafana.com/grafana/plugins/")
 	cfg.PluginAdminEnabled = pluginsSection.Key("plugin_admin_enabled").MustBool(false)
+	cfg.PluginAdminExternalManageEnabled = pluginsSection.Key("plugin_admin_external_manage_enabled").MustBool(false)
 
 	// Read and populate feature toggles list
 	featureTogglesSection := iniFile.Section("feature_toggles")