Entry pages bug

To reproduce this bug:

1. Goto Action > Entry pages
2. Click on at `Entry page titles` the bottom of the page (related reports)
3. Click on `Entry pages` again at the bottom of the report (NOT in the menu!)

Attaching screen from demo.piwik.org:
![demo-piwik-org-bug](https://cloud.githubusercontent.com/assets/576937/4755362/eebf8986-5ac4-11e4-80dc-f19e36942748.png)

My changes fix these error. I'm not sure what's the purpose of these lines. Maybe @tsteur will know that. Looks like you're author of this lines.