is_ground_content fixup (#82)

digiline nodes aren't ground content

inventory.lua

@@ -168,6 +168,7 @@ minetest.register_node("digilines:chest", {
 	paramtype2 = "facedir",
 	legacy_facedir_simple = true,
 	groups = {choppy=2, oddly_breakable_by_hand=2, tubedevice=1, tubedevice_receiver=1, axey=1, handy=1},
+	is_ground_content = false,
 	sounds = digilines.sounds.node_sound_wood_defaults(),
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.8,

lcd.lua

@@ -286,6 +286,7 @@ minetest.register_node("digilines:lcd", {
 	node_box = lcd_box,
 	selection_box = lcd_box,
 	groups = {choppy = 3, dig_immediate = 2},
+	is_ground_content = false,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.8,
 	after_place_node = function(pos)

lightsensor.lua

@@ -39,6 +39,7 @@ minetest.register_node("digilines:lightsensor", {
 
 	paramtype = "light",
 	groups = {dig_immediate=2},
+	is_ground_content = false,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.8,
 	selection_box = lsensor_selbox,

rtc.lua

@@ -35,6 +35,7 @@ minetest.register_node("digilines:rtc", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {dig_immediate=2},
+	is_ground_content = false,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.8,
 	selection_box = rtc_selbox,

wire_std.lua

@@ -109,6 +109,7 @@ for zmy=0, 1 do
 			fixed = nodebox
 		},
 		groups = groups,
+		is_ground_content = false,
 		walkable = false,
 		stack_max = 99,
 		drop = "digilines:wire_std_00000000"