Fixes#1678
Fixed for vanilla too:
8a18fe957c
Ponds and lakes were not being detected at all, neither on foot nor in a
boat.
Tested land (failure), pond, lake and shore both on foot and in a boat.
Working as intended now.
Duplicate categories are now marked instead of being listed multiple
times. This makes the configs far easier to maintain. Admins can still
expand each individual category for further customization.
Also moved the dayz_epoch_b stringtable into a dayz_epoch package in the
dayz_code stringtable.
This makes it easier to maintain and search for code strings. Epoch_b
only holds extra models and textures now.
