Fix Groudon-P back render
Merge pull request #290 from Layell/patch-6

Fix Groudon-P back render
Implement silent joins and leaves

Change the client so if the battle receives an uppercase L or J the player joins/leaves silently.
Merge pull request #291 from Joimer/patch-12

Implement silent joins and leaves
Update mega evolution message

Original implementation did not take Illusion into account.