WIP: Multiple fixes

[satra]

I'll put these in a CHANGES file shortly:

• ENH: Allow ants use a single mask image
• ENH: Create configuration option for parameterizing directories with hashes
• ENH: arrange nodes by topological sort with disconnected subgraphs
• ENH: uses the nidm iri namespace for uuids
• ENH: remove old reporting webpage (this is a WIP i hope to finish in a day or two)
• FIX: example openfmri script now makes the contrast spec a hashed input
• FIX: FILMGLS compatibility with FSL 5.0.5
• FIX: Freesurfer recon-all resume now avoids setting inputs

i don't have the bandwidth to test these exhaustively. it would be good to have these in master to get feedback if anything broke.

[chrisgorgo]

The new parametrization will force all existing workflows to rerun?

[satra]

this parameterization was added in the joinnode pr. and by default would break a lot of substitution logic. in this i changed this so as this doesn't happen by default and those who need it can turn it on.

[satra]

@FredLoney - you might want to look at this - i disabled the parameterization by default as this was breaking substitutions that relied on iterable info. but this can be controlled through a config option now.