…ret#516)

…ret#525)

* Label cleanup, add some constants instead of raw numbers

* Rename load/save game functions to be more explicit

Actually copies from battle struct to party struct to make HP and status changes to a pokemon permanent

* Use `SCREEN_WIDTH`, rename loop, and remove obsolete comment in `ClearScreenArea`

* Use `SCREEN_HEIGHT` and `lb` in `CopyScreenTileBufferToVRAM`

* Use `SCREEN_AREA` in `ClearScreen`

…pret#536)

The `--ignore` flag is not needed in Gen 1

- Use `OBJ_SIZE` and `TILE_SIZE` from hardware.inc.
- `SPRITESTATEDATA1_LENGTH`, `NUM_SPRITESTATEDATA_STRUCTS`
  and `TILE_1BPP_SIZE` are used in some places.
- Highlight an oversight in `OakSpeech` where several
  direct MBC bank switches are requested.
- Remove redundant comments in home/overworld.asm.
- Add unreferenced `FillBgMap` function to avoid a byte
  of dead code.
- Some constants added in wram.asm.
- Correctly separate the commented code in `SaveMainData`.

…pret#540)

…#553)