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.

log_popup.gd

@@ -1,19 +1,20 @@
 class_name LogPopup
 extends BasePopup
-
-@onready
-var log_panel: Panel = %LogPanel
-
-@onready
-var log_box: VBoxContainer = %LogVBoxContainer
+## The game log: a row with the time for each thing that happens in the quiz, such as a
+## player getting a point. Opened with Alt+L.
 
 var log_rows: Array
 
+@onready var log_panel: Panel = %LogPanel
+@onready var log_box: VBoxContainer = %LogVBoxContainer
+
+
 func add_log_row(text: String) -> void:
 	var log_row: String = get_time() + text
 	log_rows.append(log_row)
 	log_box.add_child(make_log_label(log_row))
 
+
 func make_log_label(row: String) -> Label:
 	var log_label: Label = Label.new()
 	log_label.add_theme_font_size_override("font_size", 20)
@@ -21,6 +22,7 @@ func make_log_label(row: String) -> Label:
 	log_label.autowrap_mode = TextServer.AUTOWRAP_WORD
 	return log_label
 
+
 func get_time() -> String:
 	var time: Dictionary = Time.get_time_dict_from_system()
 	return "%02d:%02d:%02d " % [time.hour, time.minute, time.second]