Fix preferences being unexpectedly reset by view function

Solves #62 where `history_size` was reset to 0 affecting undo/redo.

scripts/core/configuration_handler.gd

@@ -88,10 +88,10 @@ class ConfigHandler :
 
 	func _on_preference_modifications_done(confirmed_by_user:bool) -> void:
 		print_debug("Preference Modification ", ("Confirmed." if confirmed_by_user else "Dismissed!"))
-		Main.UI.set_panel_visibility("preferences", false)
 		if confirmed_by_user:
 			# warning-ignore:return_value_discarded
 			save_configurations_and_confirm(TEMPORARY, null, false)
+		Main.UI.set_panel_visibility("preferences", false)
 		# saved as config file or not, confirmation has happened, so there are actions to be taken anyway:
 		# update/reset the view (& theme) changes
 		Main.UI.update_view_from_configuration(CONFIRMED)

scripts/core/main_ui_management.gd

@@ -203,7 +203,7 @@ class UiManager :
 
 	# updates view partially or fully depending on the `configuration`
 	func update_view_from_configuration(configuration:Dictionary) -> void:
-		print_debug("View updated:", configuration)
+		# print_debug("View updated:", configuration)
 		for config in configuration:
 			var cfg = configuration[config]
 			match config:

scripts/editor/panels/preferences_panel.gd

@@ -65,6 +65,7 @@ func register_connections() -> void:
 	FIELDS.app_local_dir_browse.connect("pressed", self, "prompt_local_dir_path", [], CONNECT_DEFERRED)
 	FIELDS.app_local_dir_reset_menu.connect("item_selected_value", self, "_on_app_local_dir_reset_menu_item_selected", [], CONNECT_DEFERRED)
 	FIELDS.history_size.get_line_edit().connect("text_changed", self, "preprocess_and_emit_modification_signal", ["history_size"], CONNECT_DEFERRED)
+	FIELDS.history_size.connect("value_changed", self, "preprocess_and_emit_modification_signal", ["history_size"], CONNECT_DEFERRED)
 	pass
 
 func refresh_fields_view(preferences:Dictionary) -> void:
@@ -89,8 +90,6 @@ func preprocess_and_emit_modification_signal(value, field) -> void:
 		"language":
 			value = FIELDS.language.get_item_id(value) # Convert idx to lang_id
 		"history_size":
-			# NOTE: wee need this because spinners signal `value_changed` even on changes by code,
-			# so we use the `text_changed` of their inner LineEdit:
 			value = max(0, int(value))
 	# .. then signal
 	self.emit_signal("preference_modified", field, value)