ctrl+click opens new tab when using Clickable

[wllgrnt]

Motivation and Context

Elsewhere on the web ctrl+click will open whatever you click in a new tab, and for some usecases (e.g. testlooper) this would be useful to have in Cells - this PR adds that functionality. With thanks to @bokyoungkim-ap for pointers.

Approach

The changes on line 69 of Clickable.js are sufficient when the onClick function is standard and returning a string. When onClick is more complicated (e.g. check the object, make it if required, then link to it) you need the ctrlClick message.

How Has This Been Tested?

Ran on testlooper and clicked around + standard unit test battery.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[wllgrnt]

NB: tests are failing for curl reasons, addressed in #149

[atzannes]

That's great!
Is it possible to get some unit-testing of this?
Are test failing because of the chrome driver stuff (fixed by PR #149 )?

[wllgrnt]

That's great! Is it possible to get some unit-testing of this? Are test failing because of the chrome driver stuff (fixed by PR #149 )?

Done - added two unit tests and an object_database_webtest entry

[wllgrnt]

(also version pinned werkzeug as the build was failing due to a deprecation)