Refactors showText: split type3, remove showSpacedText

about 4% increase in speed of rendering:

```
browser        | stat         | Baseline(ms) | Current(ms) | +/- | %    | Result(P<.05)
---------------------------------------------------------------------------------------
FirefoxNightly | Overall      | 118          | 113         | 5   | 3.96 |              
FirefoxNightly | Page Request | 4            | 4           | 0   | 1.97 |              
FirefoxNightly | Rendering    | 114          | 110         | 5   | 4.03 |              
```

https://gist.github.com/yurydelendik/998bda55ad2868ce73bb