TStatistic image must be resliced on underlay file

If TStatistic.nii.gz is not resliced on the underlay file, the files are not properly displayed:

Original T-Statistic file:
![screen shot 2014-11-15 at 21 06 23](https://cloud.githubusercontent.com/assets/5374264/5060088/4f7d0f7a-6d0b-11e4-841b-ea1b2a64976d.png)

Resliced T-Statistic file:
![image](https://cloud.githubusercontent.com/assets/5374264/5060092/8ca5bb72-6d0b-11e4-97ac-b3938365885f.png)

Another possibility to solve this issue would be to share an underaly file in the nidm archive.