Add default options for the enqueueing form

Adds defaults for requestType and assignment. Corrects validation to handle empty values properly.

Closes #195 (closed)

changed milestone to %Queue 1.0

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added 4 commits

• 50b86fb5...b50dace5 - 3 commits from branch development
• dfc31df6 - Add default options for the enqueueing form

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added 5 commits

• dfc31df6...d5e7c9b3 - 4 commits from branch development
• c6e1a025 - Add default options for the enqueueing form

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added 1 commit

• 4dfc91c7 - Add default options for the enqueueing form

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enabled automatic add to merge train when the pipeline for 6af23b1d succeeds

added this merge request to the merge train at position 2

merged

mentioned in commit fefa14d3

mentioned in commit dc2ffa53