Found via `codespell -q 3 -S ./lang`

* Create generic tooltip wrapper for mobile usability.
* Change overflow menu icon/font/padding sizes.
* Change overflow drawer expand icon.

Up until now we relied on implicit loading of middlewares and reducers, through
having imports in each feature's index.js.

This leads to many complex import cycles which result in (sometimes) hard to fix
bugs in addition to (often) breaking mobile because a web-only feature gets
imported on mobile too, thanks to the implicit loading.

This PR changes that to make the process explicit. Both middlewares and reducers
are imported in a single place, the app entrypoint. They have been divided into
3 categories: any, web and native, which represent each of the platforms
  respectively.

Ideally no feature should have an index.js exporting actions, action types and
components, but that's a larger ordeal, so this is just the first step in
getting there. In order to both set example and avoid large cycles the app
feature has been refactored to not have an idex.js itself.

There are just a couple of logs in this feature, and it's a standalone bundle,
which would bloat it due to cascaded dependencis.

React Native doesn't define __filename nor __dirname so do it artisanally. In
addition, this helps with centralizing the configuration passed to loggers.

🔥🔥🔥

Using anything non-serializable for action types is discouraged:
https://redux.js.org/faq/actions#actions

In fact, this is the Flow definition for dispatching actions:

declare export type DispatchAPI<A> = (action: A) => A;
declare export type Dispatch<A: { type: $Subtype<string> }> = DispatchAPI<A>;

Note how the `type` field is defined as a subtype of string, which Symbol isn’t.

* fix(local-recording): allow config override to enable

Config overrides are not set until some time after
APP_WILL_MOUNT has completed and not in the same execution
context as when APP_WILL_MOUNT is called. So instead
choose recording controller initialization at a later time.
The time chosen is after conference join because the
controller needs the conference instance to work.

* remove redundant conditional check

move duplicate code from WavAdapter and FlacAdapter to a base class

fix Promise in setMuted

When newly joined clients register for XMPP events upon
CONFERENCE_JOINED, those events that is carried by presence (e.g. START_COMMAND) was
already fired.
Temporary solution is to let the client send a ping message after
registering XMPP event listeners. The moderator will respond with
pong, which forces the presence to be resent.

Situation when the RecordingController receives a new START_COMMAND
while it is initializing the recording adapter for the previous
START_COMMAND.