Stones and crystals

• added stone and brick
• added anchor stone and anchored anchor stone
• mountain crystal and black quartz
• added stone slime and stone golem
• added mountain crystal to crystal golems, crystal spider queen and crystal spider
• added black quartz to black crystal golem and other gems
• removed looter from crystal golems
• made black crystal golem like crystal golem (friendly and assist)
• switched silver ore chances with bromenal ore ones (to match amulet order)