Copy roles matching pattern using External API

[pawohl]

• This PR adds a new directory external-api-ecma-script containing ECMA script
• Amends the .travis-ci configuration to lint the code of the newly added external-api-ecma-script
• Adds a script in external-api-ecma-script/src that helps with copying ACL roles to new rules. There is plenty of documentation in the script itself.

[gregorydlogan]

I'm unfamiliar with setting up ILIAS, is this something that every adopter who's using it will run into?

[lkiesow]

No, since there are multiple ways of integrating Opencast in ILIAS.

@pawohl, I know it's documented in the JS file but if you browse through the folders on GitHub it would be really helpful to have the description in the README.md file of that folder. Also, please use a name describing what this script does instead of a very generic name like external-api-ecma-script. If people are looking for a script, most won't care which programming language has been used. They need to know what it does.

[Rillke]

@lkiesow Thanks for the review. Your concerns have been addressed and the requested amendments have been made. CI for the script passes.

[Rillke]

I'm unfamiliar with setting up ILIAS, is this something that every adopter who's using it will run into?

It is required, for instance, if you change or set org.opencastproject.security.custom.roles.pattern after you had an ugly patch in your code that basically did the same but you had to compile and patch Opencast in order to do this and wanted to get rid of it ;-)

A more likely use case:
Some org will set up a second ILIAS instance and they want to change the prefix of existing ACLs from ILIAS_ to ILIAS1_ so they can distinguish ACLs for those 2 installations.

[gregorydlogan]

@lkiesow is this something that can/should move forward, 4 years later :D