editor: case-insensitive section name search when adding mat

cateditor/src/pages/editor/store/index.js

@@ -363,7 +363,7 @@ export const store = new Vuex.Store({
         // see if we match a section, add a new model at the end
         let title = sectionTitle(material)
         for (let section of state.catalog.sections) {
-          if (title === section.name) {
+          if (title.toLowerCase() === section.name.toLowerCase()) {
             let newModel = extendModelFromMaterial(material)
             let models = getters.sectionModels(section)
             models.push(newModel)