Text cursor movement shortcuts do not work correctly on macOS

[szhorvat]

JabRef version ``` JabRef 5.0-beta.409--2020-02-09--6a9c915 Mac OS X 10.14.6 x86_64 Java 13.0.2 ``` On macOS, in a text box, Option-Left/Right moves the insertion point by one word, and Command-Left/Right moves it to the beginning or end of the line. This is the standard behaviour in all apps. JabRef follows this standard in some text boxes, but not others. It works in the Title field:  But it does not work in the BibTeX source box:  This makes it very inconvenient to edit the BibTeX source on a Mac. Please ensure that the app follows the OS's standard in all textboxes.

[szhorvat]

This problem is still present in the released version, and somehow it seems to be by far the biggest annoyance/hindrance when I work with JabRef. I am very much looking forward to a fix.

[github-actions[bot]]

This issue has been inactive for half a year. Since JabRef is constantly evolving this issue may not be relevant any longer and it will be closed in two weeks if no further activity occurs.

As part of an effort to ensure that the JabRef team is focusing on important and valid issues, we would like to ask if you could update the issue if it still persists. This could be in the following form:

• If there has been a longer discussion, add a short summary of the most important points as a new comment (if not yet existing).
• Provide further steps or information on how to reproduce this issue.
• Upvote the initial post if you like to see it implemented soon. Votes are not the only metric that we use to determine the requests that are implemented, however, they do factor into our decision-making process.
• If all information is provided and still up-to-date, then just add a short comment that the issue is still relevant.

Thank you for your contribution!

[Siedlerchr]

Will check that, but could be obsolete by the recent key binding Changes from @calixtus

[github-actions[bot]]

This issue has been inactive for half a year. Since JabRef is constantly evolving this issue may not be relevant any longer and it will be closed in two weeks if no further activity occurs.

As part of an effort to ensure that the JabRef team is focusing on important and valid issues, we would like to ask if you could update the issue if it still persists. This could be in the following form:

• If there has been a longer discussion, add a short summary of the most important points as a new comment (if not yet existing).
• Provide further steps or information on how to reproduce this issue.
• Upvote the initial post if you like to see it implemented soon. Votes are not the only metric that we use to determine the requests that are implemented, however, they do factor into our decision-making process.
• If all information is provided and still up-to-date, then just add a short comment that the issue is still relevant.

Thank you for your contribution!

[calixtus]

@Siedlerchr could you please test, if this issue still exists?

[Siedlerchr]

Problem with the richtextfx control used for the source code editor: Cmd + left/right moves by one word option + left/right does not do anything

[szhorvat]

This problem is still present in 5.7.