Initial ledger room (room 5)

Using the journalRoom.js as a model, create an empty but working "Ledger 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 ledgerRoom.js
- [ ] Change quoted text "Journal" to "Ledger" etc. (Learn how to search in your editor!)
- [ ] Change all room4_ references to room5_ instead
- [ ] Change all Room4 folder and filename stuff to Room5
- [ ] Create asset folders for Room5 and Panels/Room5
- [ ] Find a "floor" image for the Ledger 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 5000.
- [ ] 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.

Start by checking out the iss_157 branch and reading journalRoom.js as the model. Review the Room5 asset and panel locations, then use main.js and index.html to exercise the room. Done means an empty Ledger Room loads with a unique floor, six wall panels, updated progress and ordering, and Accacio can move around and read the defaults.

Vom Indexierungsmodell aus dem Issue-Text verfasst.