Misc cleanup (#708)

* Fix typos

* Remove unneeded using statements

* Enforce var style more

* Remove redundant qualifiers

* Fix some indentation

* Disable naming warnings on files with external enum names

* Fix build

* Mass find & replace for comments with no spacing

* Standardize todo capitalization and for/if spacing

Ryujinx.HLE/HOS/SystemState/SystemStateMgr.cs

@@ -40,7 +40,7 @@ namespace Ryujinx.HLE.HOS.SystemState
 
         internal string ActiveAudioOutput { get; private set; }
 
-        public bool DiscordIntergrationEnabled { get; set; }
+        public bool DiscordIntegrationEnabled { get; set; }
 
         public bool DockedMode { get; set; }