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Initial support for composite questions

A composite question is a test-item containing other regular test

items. This makes it possible to define a larger test item case for

which arbitrary other questions can be associated (e.g. short text

question plus an MC and ordering question etc.). The randomization

features (shuffling, x out of N, etc.) of the included test-items are

preserved such that it is possible to present the student e.g. a sub

question where only 2 out of 5 possible alternatives are displayed.

The provided implementation builds for a composite question consisting

of a constant exam intro text and the selected sub items including

points, minutes etc. The points and minutes of the composite question

are computed as the sum of the points and minutes of the

sub-items. The actual sub-items are constructed at runtime such that

per-user randomization can be applied.

Current shortcoming: question with percent-substitutions are not

supported (since the exam intro text is placed at composite form

creation time already into the form, therefore, it is the same for all

students). Furthermore, the substitution semantics are not clear

concerning the included content.

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file online-exam.wf.page was initially added on branch oacs-5-10.

file select_question.form.page was initially added on branch oacs-5-10.

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file quiz-select_question.form.page was initially added on branch oacs-5-10.

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    ./quiz-select_question.form.page
file Workflow.form.page was initially added on branch oacs-5-10.

file inclass-quiz.wf.page was initially added on branch oacs-5-10.

file inclass-exam.wf.page was initially added on branch oacs-5-10.

file edit-interaction.wf.page was initially added on branch oacs-5-10.

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file atjob-form.page was initially added on branch oacs-5-10.

file answer-single-question.wf.page was initially added on branch oacs-5-10.

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    ./answer-single-question.wf.page
file TestItemMC.form.page was initially added on branch oacs-5-10.

file TestItemUpload.form.page was initially added on branch oacs-5-10.

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    ./TestItemUpload.form.page
file TestItemText.form.page was initially added on branch oacs-5-10.

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    ./TestItemText.form.page
file TestItemShortText.form.page was initially added on branch oacs-5-10.

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    ./TestItemShortText.form.page
file TestItemSC.form.page was initially added on branch oacs-5-10.

file TestItemReorder.form.page was initially added on branch oacs-5-10.

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    ./TestItemReorder.form.page
file ExamFolder.page was initially added on branch oacs-5-10.

file TestItemComposite.form.page was initially added on branch oacs-5-10.

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    ./TestItemComposite.form.page
reduce warnings on loading: Move resources to non-deprecated location

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add prototype pages

file select-group-members.form.page was initially added on branch oacs-5-10.

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    ./select-group-members.form.page
file topic-assignment.wf.page was initially added on branch oacs-5-10.

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    ./topic-assignment.wf.page
file select-topics.form.page was initially added on branch oacs-5-10.

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    ./select-topics.form.page
file select-group-students.form.page was initially added on branch oacs-5-10.

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    ./select-group-students.form.page