Merge branch 'fix-main-element-highlight' into 'master'

Prevent the ChildrenTree from highlighting the parent element

Closes #751

See merge request !1036

vue/Navigation/ChildrenTree/ChildrenTree.vue

@@ -188,7 +188,7 @@ export default {
       this.setHighlightedBulk({ parentId: this.element.id, ids: removedElts, highlight: false })
       // Highlight added elements
       if (!this.imageShow) return
-      const addedElts = newList.filter(id => !oldList.includes(id))
+      const addedElts = newList.filter(id => !oldList.includes(id) && id !== this.element.id)
       this.setHighlightedBulk({ parentId: this.element.id, ids: addedElts })
     },
     imageShow: {