Fix missing documentation content

[skoudoro]

All dipy.*.utils (ex: dipy.tracking.utils) are missing on the documentation so this PR change the regular expression to make this files available on api reference. (see #322)

[skoudoro]

I should add a modification for resolving #570 at the same time

[codecov-io]

Codecov Report

Merging #1255 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1255   +/-   ##
=======================================
  Coverage   87.04%   87.04%           
=======================================
  Files         226      226           
  Lines       28262    28262           
  Branches     3026     3026           
=======================================
  Hits        24602    24602           
  Misses       2976     2976           
  Partials      684      684

Impacted Files	Coverage Δ
dipy/viz/actor.py	78.18% <ø> (ø)	⬆️
dipy/tracking/utils.py	86.89% <ø> (ø)	⬆️

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[coveralls]

Coverage remained the same at 85.656% when pulling bf7743d on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling bf7743d on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling ef0ff53 on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling ef0ff53 on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[arokem]

Does this build the docs OK? Because full documentation building takes a while (the examples take a while to run), you can relatively quickly test this by removing most of the lines in this file: https://github.com/nipy/dipy/blob/master/doc/examples/valid_examples.txt

[skoudoro]

I just tried to generate the API reference via "make api" command, and the *.rst generated was ok.

I will generate the full documentation a little bit later to be sure that everything is ok and let you know.

[coveralls]

Coverage remained the same at 85.656% when pulling 36040e2 on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling 36040e2 on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling a0fb0ef on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling a0fb0ef on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling d5ad16c on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling d5ad16c on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling 196ff8e on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[coveralls]

Coverage remained the same at 85.656% when pulling 196ff8e on skoudoro:fix_missing_documentation_content into 599af3e on nipy:master.

[arokem]

This looks ready to go. I'll merge this, and if there are any follow-ups, we can take them on a separate PR.