Typo

Change model_fitting_id label from "Statistical estimation" to "Model
fitting"
add: output directory from website
add: spm specific tag
add: data inputs to model fitting
add: updated spm results graph
add: updated json serialization
Merge pull request #19 from nicholsn/spm-results-irvine

WIP: Proposed SPM Results Changes After Irvine Meeting
WIP: Update FSL model

* Add `coordinateSpace` entities
* Add `Stats` activity
* Add `Parameter estimates` (beta maps)
* Add `Design matrix`
* Remove link between `Statistical estimate` and `Contrast estimate`