SMZ3: completion condition fix and more info in spoiler

[lordlou]

trafficstars

added missing completion_condition when TowerCrystals is lower than GanonCrystals added Rewards and Medallions infos to spoiler

Verified the new condition fails generation by forcing BigKeyDP on Desert Palace - Lanmolas and a Crystal being on DP with TowerCrystals=6 and GanonCrystals=7. It was passing before the fix.

[Alchav]

if the Fast Ganon goal is selected, then tower access shouldn't matter (though more restrictive logic is better than not restrictive enough). But also, I think we're missing a logical requirement for silver arrows to kill Ganon, unless I'm missing something.

[lordlou]

Silver is not a progression item in SMZ3 upstream. Its in a nice-to-have pool and its not used in any logic rules.