Initial TrialBalance room (room #6)

Using the journalRoom.js as a model, create an empty but working "Trial Balance Room." You can find the journalRoom commits on the iss_157 #157 branch. My suggestion is to the checkout that branch, then create your new branch for this issue OFF OF THAT ISS_157 BRANCH. That way you get all the journalRoom stuff.

What to do:

- [ ] copy journalRoom.js to trialBalRoom.js
- [ ] Change quoted text "Journal" to "Trial Balance" etc. (Learn how to search in your editor!)
- [ ] Change all room4_ references to room6_ instead
- [ ] Change all Room4 folder and filename stuff to Room6
- [ ] Create asset folders for Room6 and Panels/Room6
- [ ] Find a "floor" image for the TrialBalance room that is unique to our game
- [ ] Update images so that each of the 6 wall panels has one (not two or three like in journal room)
- [ ] Update various locations for the wall panel stuff (scaling, alphas, etc.)
- [ ] Update roomProgress values from 4000 based to 6000.
- [ ] Change read ordering of the wall panels in the interactivity function.
- [ ] comment out most of the checkNextPages (I think that's the name) function
- [ ] update main.js and index.html so you can test this initial room out (Accacio moves around and can read the default wall panels)

Anything else needed that I forgot? Add as a followup comment below.

Empieza haciendo checkout de la rama iss_157 #157 y leyendo journalRoom.js; después, úsalo como modelo para trialBalRoom.js. Actualiza las ubicaciones de los assets de Room6 referenciadas, main.js e index.html; estará terminado cuando la sala Trial Balance cargue, Accacio pueda moverse por ella y los seis paneles de pared muestren contenido predeterminado legible.

Escrito por el modelo de indexación a partir del texto del issue.