- fix variable reference (showLoading should have been mutableLoading) in ajax mixin and specs

- add `search` event fired at same time as callback

src/mixins/ajax.js

@@ -33,9 +33,10 @@ module.exports = {
 		 * invoke the onSearch callback.
 		 */
 		search() {
-			if (this.search.length > 0 && this.onSearch) {
+			if (this.search.length > 0) {
 				this.onSearch(this.search, this.toggleLoading)
-			}
+        this.$emit('search', this.search, this.toggleLoading)
+      }
 		},
 	},
 
@@ -49,9 +50,9 @@ module.exports = {
 		 */
 		toggleLoading(toggle = null) {
 			if (toggle == null) {
-				return this.showLoading = !this.showLoading
+				return this.mutableLoading = !this.mutableLoading
 			}
-			return this.showLoading = toggle
+			return this.mutableLoading = toggle
 		}
 	}
 }