Follow the GDScript style guide in every script

- Types on every parameter, return value and variable, and snake_case names
  (the player name limit is the constant MAX_NAME_LENGTH).
- Spelling fixes: *_triggered, character_selected, separator, caught_errors.
  The server's catched_errors key stays as the server sends it.
- Signals are connected with signal.connect() instead of by name.
- Code is ordered signals, constants, exported vars, vars, @onready vars,
  functions, with @onready on one line and two blank lines between functions.
- Every script starts with a ## description. Template comments, old LOC notes
  and commented-out code are gone, apart from the local play code.
- Lines are at most 100 characters, apart from the local play path.
- The screenshot tour turns off the blinking text cursor so pictures match.

shortcuts_popup.gd

@@ -1,11 +1,6 @@
 class_name ShortcutsPopup
 extends BasePopup
-
-@onready
-var shortcuts_vbox: VBoxContainer = %shortcutsVBox
-
-@onready
-var shortcuts_panel: Panel = %ShortcutsPanel
+## Lists the keyboard shortcuts. Opened with Alt+K or the Shortcuts button.
 
 var shortcuts_dic: Dictionary = {
 	"Alt + S": "Search",
@@ -26,14 +21,17 @@ var shortcuts_dic: Dictionary = {
 	"Alt + Ctrl + 1 - 9": "Take point from player",
 }
 
+@onready var shortcuts_vbox: VBoxContainer = %shortcutsVBox
+@onready var shortcuts_panel: Panel = %ShortcutsPanel
+
+
 #Color(0.18, 0.18, 0.18)
 #Color(0.302, 0.302, 0.302)
 #Color(0.259, 0.259, 0.259)
-
 func _ready() -> void:
 	shortcuts_dic.sort()
 	Settings.delete_children(shortcuts_vbox)
-	
+
 	var title: Label = Label.new()
 	title.add_theme_font_size_override("font_size", 20)
 	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
@@ -45,28 +43,26 @@ func _ready() -> void:
 		var panel: PanelContainer = PanelContainer.new()
 		var hbox: HBoxContainer = HBoxContainer.new()
 		hbox.alignment = BoxContainer.ALIGNMENT_CENTER
-		
+
 		var label: Label = Label.new()
 		label.add_theme_font_size_override("font_size", 20)
 		label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
 		label.text = shortcut
 		label.autowrap_mode = TextServer.AUTOWRAP_WORD
 		label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
-		
+
 		var label2: Label = Label.new()
 		label2.add_theme_font_size_override("font_size", 20)
 		label2.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
 		label2.text = shortcuts_dic[shortcut]
 		label2.autowrap_mode = TextServer.AUTOWRAP_WORD
 		label2.size_flags_horizontal = Control.SIZE_EXPAND_FILL
-		
+
 		if count % 2 == 0:
 			var new_stylebox_normal: Resource = panel.get_theme_stylebox("panel").duplicate()
 			new_stylebox_normal.bg_color = Color(0.18, 0.18, 0.18)
 			panel.add_theme_stylebox_override("panel", new_stylebox_normal)
-			#label.add_theme_stylebox_override("normal", new_stylebox_normal)
-			#label2.add_theme_stylebox_override("normal", new_stylebox_normal)
-		
+
 		hbox.add_child(label)
 		hbox.add_child(label2)
 		panel.add_child(hbox)