FIX EZP-22604:  Add space separator between tag cloud's words

## Link ##
https://jira.ez.no/browse/EZP-22604
## Description ##
The goal here is to put space separator between words in the tag cloud block of the home page.
![tagcloud](https://cloud.githubusercontent.com/assets/5558661/2945780/cc31eeec-d9e4-11e3-9eb8-fc5de3983e17.png)