Settings menu: display settings, language codes, style guide window

Display tab: window mode (windowed/maximized/borderless/exclusive), monitor, window
size per monitor (centred, disabled in fullscreen), V-Sync, frame rate cap, reset;
applied and saved at once through the core DisplaySettingsService. Language is read
through LanguageCode (en-en/en_US = English). The window follows the style guide
shell: title and tabs in the header, close on the right, footer hint and per-tab reset.
The main menu hides every session panel of UiHost (pause menu stayed above it).
New suite display_settings (+ --shots); collection_edit leaves the game through the
pause menu and checks it is closed.

locale/en.properties

@@ -44,6 +44,11 @@ settings/back = Back
 settings/audio = Audio
 settings/sounds = Sounds
 settings/music = Music
+settings/ambient = Ambience
+settings/interface_language = Interface language
+settings/section_window = Window
+settings/section_performance = Performance
+settings/saved_at_once = Changes are applied and saved at once
 settings/volume = Volume
 settings/language = Language
 settings/lang_ru = Russian
@@ -55,18 +60,20 @@ settings/tab_display = Display
 settings/display = Display
 settings/window_mode = Window Mode
 settings/window_mode_windowed = Windowed
-settings/window_mode_fullscreen = Fullscreen
-settings/window_mode_borderless = Borderless
-settings/resolution = Resolution
+settings/window_mode_maximized = Maximized window
+settings/window_mode_borderless = Fullscreen (borderless)
+settings/window_mode_fullscreen = Fullscreen (exclusive)
+settings/resolution = Window size
+settings/resolution_fullscreen_hint = Fullscreen modes use the monitor resolution
 settings/monitor = Monitor
-settings/monitor_screen = Screen {0} ({1}x{2})
+settings/monitor_screen = Monitor {0} ({1}×{2})
+settings/monitor_screen_primary = Monitor {0} ({1}×{2}), primary
 settings/vsync = V-Sync
-settings/scale = Scale
-settings/scale_1x = 1x
-settings/scale_2x = 2x
-settings/scale_3x = 3x
-settings/scale_4x = 4x
-settings/tab_mods = Mod Settings
+settings/max_fps = Frame rate limit
+settings/max_fps_unlimited = Unlimited
+settings/max_fps_value = {0} FPS
+settings/display_reset = Reset display settings
+settings/tab_mods = Mods
 settings/mod_list_title = Mods
 settings/mods_no_settings = No mod settings available
 settings/mods_reset = Reset to Defaults