[FIX] Make config keys CamelCase

[DESm1th]

As per https://github.com/TIGRLab/admin/issues/1764 needs to be merged in at the same time as https://github.com/TIGRLab/datman-config/pull/102

[codecov]

Codecov Report

Merging #296 (7108aa1) into master (ef9563a) will not change coverage.
The diff coverage is 29.87%.

@@           Coverage Diff           @@
##           master     #296   +/-   ##
=======================================
  Coverage   32.15%   32.15%           
=======================================
  Files          60       60           
  Lines        8948     8948           
=======================================
  Hits         2877     2877           
  Misses       6071     6071           

Impacted Files	Coverage Δ
bin/bidsify.py	18.75% <0.00%> (ø)
bin/dm_link_project_scans.py	28.94% <0.00%> (ø)
bin/dm_link_shared_ids.py	38.46% <0.00%> (ø)
bin/dm_log_server.py	0.00% <0.00%> (ø)
bin/dm_qc_report.py	31.75% <0.00%> (ø)
bin/dm_sftp.py	0.00% <0.00%> (ø)
bin/dm_task_files.py	0.00% <0.00%> (ø)
bin/dm_xnat_extract.py	0.00% <0.00%> (ø)
bin/dm_xnat_project_overview.py	0.00% <0.00%> (ø)
bin/dm_xnat_rename.py	0.00% <ø> (ø)
... and 12 more

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