Fix state initialization (#1652)

* Add test-utils/components.js and its tests

* Tests: group together tests with/without components

* Tests: factory => closure components

* Tests: add dummy forEach blocks around sections with components

* Tests: render/test-components tweaks

* Tests: Wrap some component definitions in `createComponent()` calls

These are the ones that would have been tedious to automate.
jscodeshift will handle the remaining ones

* Tests: wrap the rest of the components definitions

* Tests: enable the three kind of components in all related files but api/tests/test-route.js

* Add test-utils/components.js to index.html where needed

* Tests: Some more render/tests/test-component.js refactoring

* Tests: enable tests for #1638

* fix #1638

* Test: ensure that recycled components get a fresh state

* Tests: add a test for onbeforeupdate and recycled nodes

* Fix recycled components initialization
fix #1641

test-utils/components.js

@@ -0,0 +1,27 @@
+module.exports = [
+  {
+    kind: 'POJO',
+    create: function(methods) {
+      var res = {view: function() {return {tag:'div'}}}
+      Object.keys(methods || {}).forEach(function(m){res[m] = methods[m]})
+      return res
+    }
+  }, {
+    kind: 'constructible',
+    create: function(methods) {
+      function res(){}
+      res.prototype.view = function() {return {tag:'div'}}
+      Object.keys(methods || {}).forEach(function(m){res.prototype[m] = methods[m]})
+      return res
+    }
+  }, {
+    kind: 'closure',
+    create: function(methods) {
+      return function() {
+        var res = {view: function() {return {tag:'div'}}}
+        Object.keys(methods || {}).forEach(function(m){res[m] = methods[m]})
+        return res
+      }
+    }
+  }
+]