Fix "regressions" from LA

[tobiasvl]

• https://touriantourist.blogspot.com/2016/01/links-awakening-vs-links-awakening-dx.html

• https://www.youtube.com/watch?v=0mYfAx_0wXc&t=910s

• [ ] Speed up level 2 boss

• [ ] Remove Medicine from chests

• [ ] Remove new owl statues from dungeons (maybe even replace with stone slabs?)

• [ ] Fix Evil Eagle cheese (with red tunic)

• [ ] #15

• [x] Restore Richard's dialogue in DX 1.2 (regression from DX 1.1) #13

• [x] Split Key Cavern into two floors on minimap (regression from DX JP) #14

• [x] Dialog skipping: https://www.romhacking.net/hacks/7268/ #13

• [ ] Dark rooms (D2 and D8) should be darker (wObjectAffectingBGPalette)

• [ ] Move "PUSH SELECT" text on subscreen to below the inventory, to reintroduce L-1 etc