Initial bugs and fixes

[gameboy9]

• [x] Crash Mid-Lunar Subterranne - empty monster side - 50J0222 | 118933711
• [x] And again... 361212379 | HOSI774
• [x] Script stalls at final gauntlet... 50R0222 seed 818060086 (a lot of issues between the 3rd and 4th battle of the final gauntlet?)
• [x] Battle came up, but game stalled at final battle of penultimate gauntlet for a seed. 181056712 | 104I722
• [x] Another final gauntlet stall-out - 2121628922 | 50Q0422
• [x] Edward still can't equip the Knife. :(
• [x] Add a "relaxed" shop level. Standard makes hourglasses 1000+, pro makes hourglasses 5000+.
• [x] Regnarok should be 20,000, not 2,000.
• [x] Crystal rings should be a lot more than 600.
• [x] You can skip the Summon Cave gauntlet via a secret passage. Seal the secret passage.
• [x] Create a checksum of monster_party.csv to confirm correct seed and flags.
• [x] Remove the penultimate floor of the underground waterfall cave.
• [x] Magnes Cave - Change starting point from point ID 2 to 3.
• [x] Artemis arrows can be sold for more than they can be bought.
• [x] Glass Helm should sell for a lot more than 2,000.
• [x] Replace the game_constant_int file with the new patch version?
• [x] Randomize treasures in the Eblan Cave Infirmary
• [x] Continue to improve the first Lubar Subterranne Gauntlet. (Lots of beamers)