GUI Launch form: pipeline version selection & continue run improvemen…

…ts (do not display configurations selector if there is only 1 configuration)

client/src/components/pipelines/launch/form/LaunchPipelineForm.js

@@ -5951,7 +5951,7 @@ class LaunchPipelineForm extends localization.LocalizedReactComponent {
         return null;
       }
       let configuration;
-      if (this.props.configurations.length > 0 && this.props.currentConfigurationName) {
+      if (this.props.configurations.length > 1 && this.props.currentConfigurationName) {
         const configurationChange = (configurationName) => {
           if (this.props.onConfigurationChanged) {
             this.props.onConfigurationChanged(configurationName);