[ENH] Strip reportlets out of full report

[oesteban]

A first stab at #478. Requires nipreps/niworkflows#210 to be merged in first

The stripped svgs are stored in:

fmriprep/
 |- sub-01/
 |   |- anat/
 |   |- func/ 
 |   \- figures/
 |       \- *.svg  <------- HERE
 \- sub-01.html

we can move it if you think that is not right.

[effigies]

Maybe figures/ or fig/? Just to give a description besides the file type.

[effigies]

Can we drop the _scratch_reportlets_fmriprep_?

Also, if this is going to be a derivative, I think it makes sense to apply some naming conventions that can eventually be standardized. For instance, perhaps the type can be _{static,anim}.svg indicating whether it's a static or animated image. Here are some examples, but feel free to reject any that you don't like.

Structural:

• reconall.svg -> surfaceoutline_static.svg
• t1_2_mni.svg -> normalization_anim.svg
• t1_seg.svg -> segmentation_static.svg
• t1_skull_strip.svg -> skullstrip_static.svg

Functional:

• acompcor.svg -> acompcor_static.svg
• bbr.svg -> registration_anim.svg
• bold_mask.svg -> skullstrip_static.svg
• syn_sdc.svg -> synsdc_anim.svg
• tcompcor.svg -> tcompcor_static.svg

[oesteban]

I totally agree with all of this. Would it be fine with you if we leave this comment for the next iteration over #478 ? Just to make all these changes more iteratively, and risk less to breaking reports.

[effigies]

Missed this, sorry. Sure.