PLT-6965 jira integration (plus plugin scaffolding) (#6918)

* plugin scaffolding / jira integration

* add vendored testify packages

* webhook fix

* don't change i18n ids

* support configuration watching

* add basic jira plugin configuration to admin console

* fix eslint errors

* fix another eslint warning

* polish

* undo unintentional config.json commit >:(

* test fix

* add jira plugin diagnostics, remove dm support, add bot tag, generate web-safe secrets

* rebase, implement requested changes

* requested changes

* remove tests and minimize makefile change

* add missing license headers

* add missing comma

* remove bad line from Makefile

app/diagnostics_test.go

@@ -28,6 +28,24 @@ func newTestServer() (chan string, *httptest.Server) {
 	return result, server
 }
 
+func TestPluginSetting(t *testing.T) {
+	before := utils.Cfg.PluginSettings.Plugins
+	utils.Cfg.PluginSettings.Plugins = map[string]interface{}{
+		"test": map[string]string{
+			"foo": "bar",
+		},
+	}
+	defer func() {
+		utils.Cfg.PluginSettings.Plugins = before
+	}()
+	if pluginSetting("test", "foo", "asd") != "bar" {
+		t.Fatal()
+	}
+	if pluginSetting("test", "qwe", "asd") != "asd" {
+		t.Fatal()
+	}
+}
+
 func TestDiagnostics(t *testing.T) {
 	Setup().InitBasic()
 
@@ -116,6 +134,7 @@ func TestDiagnostics(t *testing.T) {
 			TRACK_CONFIG_SUPPORT,
 			TRACK_CONFIG_NATIVEAPP,
 			TRACK_CONFIG_ANALYTICS,
+			TRACK_CONFIG_PLUGIN,
 			TRACK_ACTIVITY,
 			TRACK_SERVER,
 		} {