Implement trainer battles and various changes

Implement trainer battles; add dialogue functionality; add random session seed for predictable random results; remove capitalization from text; add full party heal after every 10 waves

public/images/ui/pb_tray_ball.json

@@ -0,0 +1,104 @@
+{
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+				"h": 7
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+			"scale": 1,
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+}