[#33160] *Articles missing for admins in front end (master)  

Tracker
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=33160&start=0

This PR ports to master the 2.5.x PR #2798

It also normalises blog item by adding the div with class unpublished
An unpublished article which also has a pending publishing date will get these labels
![adminaccesstounpublished](https://f.cloud.github.com/assets/869724/1940060/cb255fa4-7f6f-11e3-8c8e-01651433b09f.png)

If only a pending publishing date, we will get:
![pending](https://f.cloud.github.com/assets/869724/1940126/396009fa-7f71-11e3-9621-1e7666f0cd5d.png)