The module search under add deadline deviations is case sensitive

[ashi006]

Fixes #1280

Description

What?

In add deadline deviations form, the module field search was case sensitive.

Why?

getSearchResults(() function in ajax_search_select.js was using the default :contains (which is case sensitive) selector to select the module value.

How?

Defined a custom selector "icontains" in ajax_search_results.js file to select elements that contain a specific text substring, case-insensitively and replaced :contains with :icontains in getSearchResults().

Fixes #1280

Testing

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• Accessibility test using the WAVE extension.
• Django unit tests.
• Selenium tests.
• Other test. (Add a description below)
• Manual testing.

[ADD A DESCRIPTION ABOUT WHAT YOU TESTED MANUALLY]

Did you test the changes in

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Think of what is affected by these changes and could become broken

Translation

• Did you modify or add new strings in the user interface? (Read about how to create translation)

Programming style

• Did you follow our style guides?
• Did you use Python type hinting in all functions that you added or edited? (type hints for function parameters and return values)

Have you updated the README or other relevant documentation?

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• README.md.
• Aplus Manual.
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Is it Done?

• Reviewer has finished the code review
• After the review, the developer has made changes accordingly
• Customer/Teacher has accepted the implementation of the feature

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[ihalaij1]

Excellent!

See the single question that I had.

[ihalaij1]

Great, thank you!

[ihalaij1]

I updated the commit message to include an empty newline before the Fixes #1280.