Ghost roles create new minds, better tracking of roles at round end screen (#5175)

* Ghost roles now get new Minds

* Some round start/end button stuff

* Mind tracking for better round end reports

* Make traitor kill objectives use mind CharacterName rather than actual occupied entity ("kill brain" prevention)

* Transition over to EntityUid for mind stuff because that's the only way to do it

* BrainSystem fix for PR rebase

Content.Client/Administration/UI/Tabs/RoundTab.xaml

@@ -4,9 +4,10 @@
     Margin="4"
     MinSize="50 50">
     <GridContainer
-        Columns="4">
+        Columns="3">
         <cc:CommandButton Command="startround" Text="{Loc Start Round}" />
         <cc:CommandButton Command="endround" Text="{Loc End Round}" />
         <cc:CommandButton Command="restartround" Text="{Loc Restart Round}" />
+        <cc:CommandButton Command="restartroundnow" Text="{Loc administration-ui-round-tab-restart-round-now}" />
     </GridContainer>
 </Control>