Create custom rooms, add helper buttons, and redesign background

This is a huge patch (I finally got some time to work on this project during the holiday)!

Here are the changes:

Client side:
1. Added a Bootstrap Phaser scene to improve the communication between Phaser and React/Redux as well as to smooth the scene changing workflow.
2. Made a completely new dynamic sky background with floating clouds!! The background has 2 themes: morning and evening; if the client's local time is in the morning, the background would be morning sky (and vice versa). There is also a button on the bottom right that allows you to change the background manually.
3. Added three React components: RoomSelectionDialog, CustomRoomTable, and CreateRoomForm. Instead of directly going into the public lobby like in our current prototype, users can now select to join the public lobby, search for custom rooms, or create their own custom rooms. There are also components to help user enter/validate room password.
4. Added RoomStore to store the states of available rooms, joined room properties, etc.
5. Upon initializing Network, clients will now first join the LobbyRoom (Colyseus built-in room) to get real time updates of the custom room list. Once selecting a room, the client will leave the LobbyRoom and join the selected room.
6. Added 3 helper buttons on the bottom right to (1) show room info, (2) show control guide, and (3) change background theme.
Server side:
1. Defined LobbyRoom which allows real time listing of available custom rooms.
2. Added onAuth() step to the rooms' life cycle; if the room is password-protected, the server has get correct password to proceed to the onJoin() step.
3. Added bcrypt to hash and compare password.
4. All rooms now store room's name, description, and hashed password, and will send these properties to connected users upon joining (password excluded).

I also want to make shareable links for custom rooms (need to add react-router), but I think this PR is already pretty huge. I will leave it for the next PR. Let me know your thoughts! Merry Christmas!

kevinshen56714 / SkyOffice

Create custom rooms, add helper buttons, and redesign background #29