Refactor: Modularize home page (#1372)

* Move HTTP headers section to component

* Move import cURL modal to component

* Move Notes, OAuth token modal to seperate components

* Fix deepcode analysis

* Move parameters section to seperate component

* Move codegen modal to component

* ES6

components/collections/save-request-as.vue

@@ -188,7 +188,6 @@ export default {
     },
     hideModal() {
       this.$emit("hide-modal")
-      this.$emit("hide-model") // for backward compatibility  // TODO: use fixed event
     },
   },
 }