Fixes for some badges from Batch 205

[IronCam1678]

add missing trigger:coords to candyhead badge
rename observatory_in_palace on the lang files to reflect changes elsewhere
remove unneeded lines from mischievious rabbit badge which were causing issues
update map id for slayer delusion badge file

[tsdko]

Also to note: hellish_rabbit_lady, forest_interlude_visit and bad_hair_guitar are replacement badges and as such should've at least had the same filenames for condition files as old badges (rabbelle_mask_hellish_village, forest_interlude, bad_hair_day_guitar) in order not to force players who had the old badges to get them again. (This would ideally apply to badge filenames as well but if the badge has already been deployed with the current name there's always the risk a new player gets it and would have to get it again once the fix gets merged.) This is described in the guide under Replacement of a Removed Badge. @Jameson516