Let's make it all pretty, shall we?

We missed a couple directories with previous attempts to turn this on
globally: app/ and libtextsecure/

Not to mention files in places we didn't expect: ts files that weren't
in the ts directory!

This turns prettier on for every file we care about (js, ts, tsx, md)
everywhere in the project but for a few key parts.

js/modules/deferred_to_promise.d.ts

@@ -1 +1,3 @@
-export function deferredToPromise<T>(deferred: JQuery.Deferred<any, any, any>): Promise<T>;
+export function deferredToPromise<T>(
+  deferred: JQuery.Deferred<any, any, any>
+): Promise<T>;