Basic AHelp Panel, Ported & Fixed (#4776)

* Graft from https://github.com/space-wizards/space-station-14/pull/3049

* 'openahelp' command

* Add AHelp into escape menu

* Add a way to ahelp a player from the kick window

* bwoink: XAMLify, bugfix, etc.

* Rename the kick/bwoink window the Player Actions Panel

* Add the bwoink sound y'all know and love

adminhelp.ogg taken from d775e1ac80/sound/effects/adminhelp.ogg
 (available in master, therefore see master license: "All assets including icons and sound are under a Creative Commons 3.0 BY-SA license unless otherwise indicated.")
 "Changed the adminhelpsound to some creative commons sound I pinched. Until somebody can get a better one. I'm sick of MAAAAAAAAOOOOOOW."
 Actual source is https://freesound.org/people/martian/sounds/19261/ (CC0)
 The sound had been reversed and the volume altered.

* Actually play the bwoink sound on receiving an ahelp that you didn't send

Content.Client/EscapeMenu/UI/EscapeMenu.xaml

@@ -8,6 +8,7 @@
         <changelog:ChangelogButton />
         <ui:VoteCallMenuButton />
         <Button Name="OptionsButton" Text="{Loc 'ui-escape-options'}" />
+        <Button Name="AHelpButton" Text="{Loc 'ui-escape-ahelp'}" />
         <Button Name="DisconnectButton" Text="{Loc 'ui-escape-disconnect'}" />
         <Button Name="QuitButton" Text="{Loc 'ui-escape-quit'}" />
     </BoxContainer>