Clarified which QualificationTypeIDs can be used

[bgall]

Didn't specify that one can take the QualificationTypeID from a Qualification previously created in the RUI, command line, or other interface.

Please ensure the following before submitting a PR:

• [ ] if suggesting code changes or improvements, open an issue first
• [ ] for all but trivial changes (e.g., typo fixes), add your name to DESCRIPTION
• [ ] for all but trivial changes (e.g., typo fixes), documentation your change in NEWS.md with a parenthetical reference to the issue number being addressed
• [ ] if changing documentation, edit files in /R not /man and run devtools::document() to update documentation
• [ ] add code or new test files to /tests for any new functionality or bug fix
• [ ] make sure R CMD check runs without error before submitting the PR

[codecov-io]

Codecov Report

Merging #128 into master will decrease coverage by 28.78%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #128       +/-   ##
==========================================
- Coverage    28.9%   0.12%   -28.79%     
==========================================
  Files          72      72               
  Lines        4892    4892               
==========================================
- Hits         1414       6     -1408     
- Misses       3478    4886     +1408

Impacted Files	Coverage Δ
R/seconds.R	0% <0%> (-100%)	:arrow_down:
R/emptydf.R	0% <0%> (-100%)	:arrow_down:
R/setRownames.R	0% <0%> (-100%)	:arrow_down:
R/GenerateExternalQuestion.R	0% <0%> (-100%)	:arrow_down:
R/RequesterReport.R	0% <0%> (-96%)	:arrow_down:
R/WorkerReport.R	0% <0%> (-93.34%)	:arrow_down:
R/AccountBalance.R	0% <0%> (-92.86%)	:arrow_down:
R/ListQualificationTypes.R	0% <0%> (-92.31%)	:arrow_down:
R/GenerateHTMLQuestion.R	0% <0%> (-91.67%)	:arrow_down:
R/UpdateQualificationScore.R	0% <0%> (-87.04%)	:arrow_down:
... and 31 more

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[leeper]

Thanks!