Updated about dialog

Updated a few plugin commands
Removed splashscreen
Added some themes
Updated some captions

editor/studio/UnitCodeInspector.pas

@@ -29,6 +29,7 @@ type
   public
     Value: string;
     constructor Create(const AValue: string); reintroduce;
+    destructor Destroy; reintroduce;
   end;
 
   TSTLWrapper = class(TObject)
@@ -415,6 +416,12 @@ begin
   inherited;
 end;
 
+destructor TStringWrapper.Destroy;
+begin
+  Value := '';
+  inherited;
+end;
+
 initialization
 
 FItems := TObjectList.Create;