ART: misc art polish -Texture seams, spawner crystal update. (#268)

* Fix for seams in floor both in dungeon scene and CharSel & Title scenes.  Update to crystal material.

Author: jdepuy

Assets/BossRoom/Prefabs/Dungeon/Dungeon Pieces/animated/env_floor_switch_glow.prefab

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+  m_Name: env_floor_switch_glow
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Assets/BossRoom/Prefabs/Dungeon/Dungeon Pieces/env_door_boss_head.prefab

@@ -11,8 +11,6 @@ GameObject:
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Assets/BossRoom/Prefabs/Dungeon/Dungeon Pieces/env_lava.prefab

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