Improve editor's tooltip. Wrapping hack should no longer be necessary.

Also some less significant improvements.

src/plugins/texteditor/tooltip/tipfactory.cpp

@@ -47,9 +47,5 @@ Internal::QTipLabel *TipFactory::createTip(const TipContent &content, QWidget *w
         tip = new TextTip(w);
     else if (content.typeId() == ColorContent::COLOR_CONTENT_ID)
         tip = new ColorTip(w);
-
-    if (tip)
-        tip->setContent(content);
-
     return tip;
 }