Disable Save button while creating a new configuration

vue/Process/Workers/Configurations/List.vue

@@ -152,7 +152,9 @@ export default {
         // If a configuration ID is set, we must have this configuration in the store
         !this.selectedConfigurationId === !this.selectedConfiguration &&
         // Do not allow saving the currently selected worker configuration if said configuration is archived
-        !this.selectedConfiguration?.archived
+        !this.selectedConfiguration?.archived &&
+        // Do not allow saving while the configuration creation form is active
+        !this.configCreate
     },
     canToggleArchive () {
       // This cannot check that the user has enough rights on the worker or the repository, because the API does not provide that anywhere.
@@ -177,7 +179,9 @@ export default {
       }
     },
     saveButtonTitle () {
-      if (this.canSave) return 'Select this configuration'
+      if (this.canSave && this.selectedConfigurationId) return 'Select this configuration.'
+      if (!this.selectedConfigurationId && this.configurationId) return `Remove configuration ${this.workerConfigurations[this.workerId][this.configurationId].name}.`
+      if (this.configCreate) return 'Create the new configuration first, or select an existing configuration to use.'
       if (this.loading) return 'Loading…'
       if (this.selectedConfiguration?.archived) return 'An archived configuration cannot be selected in a process.'
       return null