Fixed Nette revision string on title of Tracy logo.

Before
![tracy-logo-title-bad](https://cloud.githubusercontent.com/assets/375717/3089175/b9a8eb2a-e57b-11e3-9049-74c287bc2cc9.png)

After
![tracy-logo-title-ok](https://cloud.githubusercontent.com/assets/375717/3089177/c854a0a6-e57b-11e3-82e4-a9cba4880854.png)