Buffs to janitorial equipment

[XElectricX]

Cleaning is less CBT now with these changes.

• Mop has no cooldown
• Soap cleans much faster than it did before
• Janitorial cart and mop bucket have 500 units of capacity, was 100
• Fixes mops cleaning the tile under mop buckets if refilling
• Water backpacks no longer have slowdown (except chemical backpack since it could be very OP if ever spawned)
• Galoshes have no slowdown
• Light replacers start with the full 20 lights, not 10
• Brooms can sweep 40 items at a time, was 20