Update to Backbone 1.4.0 and use fork of Backbone.NativeView

with `_setElement` fix.

See https://github.com/akre54/Backbone.NativeView/pull/29

CHANGES.md

@@ -2,6 +2,8 @@
 
 ## 4.1.3 (Unreleased)
 
+- Upgrade to Backbone 1.4.0
+- Fix "flashing" of roster filter when you have less than 5 roster contacts.
 - Allow setting of debug mode via URL with `/#converse?debug=true`
 - New config setting [locked_muc_domain](https://conversejs.org/docs/html/configuration.html#locked-muc-domain)
 - New config setting [show_client_info](https://conversejs.org/docs/html/configuration.html#show-client-info)

package.json

@@ -39,7 +39,7 @@
     "@fortawesome/fontawesome-free": "5.3.1",
     "awesomplete-avoid-xss": "^1.1.2",
     "babel-loader": "^8.0.4",
-    "backbone.nativeview": "^0.3.3",
+    "backbone.nativeview": "conversejs/Backbone.NativeView#5997c8197ca594e6b8469447f28310c78bd1d95e",
     "backbone.overview": "^1.0.2",
     "backbone.vdomview": "^1.0.1",
     "bootstrap": "^4.0.0",
@@ -63,7 +63,7 @@
     "jed": "1.1.1",
     "jquery": "3.2.1",
     "jsdoc": "^3.5.5",
-    "lerna": "^3.11.1",
+    "lerna": "^3.13.1",
     "lodash-template-loader": "^2.0.0",
     "lodash-template-webpack-loader": "jcbrand/lodash-template-webpack-loader",
     "long": "^3.1.0",

src/headless/package.json

@@ -22,7 +22,7 @@
   },
   "gitHead": "9641dcdc820e029b05930479c242d2b707bbe8e2",
   "devDependencies": {
-    "backbone": "1.3.3",
+    "backbone": "1.4",
     "backbone.browserStorage": "0.0.5",
     "es6-promise": "^4.1.0",
     "filesize": "^3.6.1",