Remove spaces from generated scopes

[mayrmax]

Generated scopes contain a space in their name.
By standard scopes are sent to the backend as a space separated list.
See RFC 6749

This change removes the spaces from generated scopes and allows standard handling by existing libraries.

This breaking change as old scopes would not work anymore.

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I'm not sure how others handled this I saw some solutions that separate scopes by colons but this would make it standard compatible.

[codecov-io]

Codecov Report

Merging #258 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #258   +/-   ##
=======================================
  Coverage   94.47%   94.47%           
=======================================
  Files           4        4           
  Lines         326      326           
=======================================
  Hits          308      308           
  Misses         18       18

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[michaeldgraham]

#608