Refactor team pages to react & design change (#12574)

* Rewriting team pages in react

* teams to react progress

* teams: getting team by id returns same DTO as search, needed for AvatarUrl

* teams: progress on new team pages

* fix: team test

* listing team members and removing team members now works

* teams: team member page now works

* ux: fixed adding team member issue

* refactoring TeamPicker to conform to react coding styles better

* teams: very close to being done with team page rewrite

* minor style tweak

* ux: polish to team pages

* feature: team pages in react & everything working

* fix: removed flickering when changing tabs by always rendering PageHeader

public/test/jest-shim.ts

@@ -1,6 +1,17 @@
 declare var global: NodeJS.Global;
 
-(<any>global).requestAnimationFrame = (callback) => {
+(<any>global).requestAnimationFrame = callback => {
   setTimeout(callback, 0);
 };
 
+(<any>Promise.prototype).finally = function(onFinally) {
+  return this.then(
+    /* onFulfilled */
+    res => Promise.resolve(onFinally()).then(() => res),
+    /* onRejected */
+    err =>
+      Promise.resolve(onFinally()).then(() => {
+        throw err;
+      })
+  );
+};