[epg] adjust title to the left edge for the first items in timeline view

This adjust the title of the first item in EPG timeline view if you scroll so it always starts at the left edge of the programme grid.

![screenshot000](https://f.cloud.github.com/assets/1878991/2365875/bc24bf4a-a6e3-11e3-8148-79eff91d70c2.png)

Hell, it's done ;)