fixing bugs found during initial review

[antgonza]

Found 3 things:

• By mistake left a hardcoded value, replacing for a variable vm.studyId
• The study list had an extra field:
  
• While testing the EBI submission caught that if we try modify an error will be raised.

[codecov-io]

Codecov Report

Merging #2596 into release-candidate will not change coverage.
The diff coverage is n/a.

@@                Coverage Diff                 @@
##           release-candidate    #2596   +/-   ##
==================================================
  Coverage              94.44%   94.44%           
==================================================
  Files                    160      160           
  Lines                  19523    19523           
==================================================
  Hits                   18439    18439           
  Misses                  1084     1084

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[tkosciolek]

I don't understand this <"bottom"p> syntax. but if this is ok, then the rest looks fine

[antgonza]

The syntax comes from: http://legacy.datatables.net/usage/options, but the screenshot shows the differences.