Rename 'data' into 'imageData'

As agreed on NIDASH-DDWG call 10/02/2014.
Proposed 'image data' modelling

As discussed on March 26th
Rebasing
fix: capitalize prov:collection
fix: use prov:Location class not prov:location attribute
Remove brain from attribute names

`targetBrainIntensity` becomes `targetIntensity` and
`measuredMedianBrainIntensity` becomes `medianIntensity`
`Image data` updated to `data`
Merge pull request #37 from nicholsn/master

Capitalize class names in prov namspace
Merge pull request #34 from cmaumet/spmExTests

A first unit test for NI-DM export
Update bold font

change `**` to `<b>` HTML tag as the former is not properly displaying bold for part of the words.
Rename 'data' into 'imageData'

As agreed on NIDASH-DDWG call 10/02/2014.
Proposed 'image data' modelling

As discussed on March 26th
Remove brain from attribute names

`targetBrainIntensity` becomes `targetIntensity` and
`measuredMedianBrainIntensity` becomes `medianIntensity`
`Image data` updated to `data`
Capitalise "prov:Collection"
Update serialisations
Remove "image" from data label
Update serialisations
add: initial mapping of cff to provn
rf: containers refer to metadata about binary objects