Update jquery-ui to 1.13.3 and move jquery-ui and ui-contextmenu to package.json

[david-yz-liu]

Proposed Changes

(Describe your changes here. Also describe the motivation for your changes: what problem do they solve, or how do they improve the application or codebase? If this pull request fixes an open issue, use a keyword to link this pull request to the issue.)

First, the version of jquery-ui we were using was out of date and contained some security issues (e.g. https://github.com/MarkUsProject/Markus/security/code-scanning/25). Second, it was being included as a vendored library, making it harder to manage updates.

I've now moved jquery-ui into package.json, as well as another dependent library, ui-contextmenu. I needed to modify the webpack configuration to ensure these libraries could be compiled with webpack. I then removed old Javascript files under vendor/assets/javascripts. Note that jCrop was already in package.json, so that vendored file could just be removed. The last remaining vendored jquery-related JS file, jquery.easyModal.js, doesn't have a corresponding npm package, so couldn't be easily moved to package.json.

Screenshots of your changes (if applicable)

Associated documentation repository pull request (if applicable)

Type of Change

(Write an X or a brief description next to the type or types that best describe your changes.)

Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)
🎨 User interface change (change to user interface; provide screenshots)
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📦 Dependency update (change that updates a dependency)	X
🔧 Internal (change that only affects developers or continuous integration)

Checklist

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Questions and Comments

(Include any questions or comments you have regarding your changes.)

We are working to migrate away from the jQuery easyModal library to react-modal.

[coveralls]

Pull Request Test Coverage Report for Build 10078585579

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.414%

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Totals
Change from base Build 10069407447:	0.0%
Covered Lines:	40148
Relevant Lines:	43246

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💛 - Coveralls