String truncate

Hi,
   I have implemented the truncate method on both Test cases and  Test plans modules , so now if the description is too long  only part of the string is displayed.


Before Implementation


![truncate_before](https://cloud.githubusercontent.com/assets/7028737/5119055/7db155ac-7091-11e4-8089-29145465540d.png)


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  After Implementation


  
![truncating](https://cloud.githubusercontent.com/assets/7028737/5119059/97d63c40-7091-11e4-958f-1cabf4406c03.png)