dmn

Describe the Bug

When extracting the Linux tarball distribution it has very relaxed file permissions.

There is Read, Write and Execution permission for all files and folder.

Steps to Reproduce

Doing a listing of files and folders in the shell will show that the file permissions are very relaxed.

1. Navigate to the place where you want to extract the Linux tarball: `cd /opt/c

Describe the Bug

The DMN Editor doesn't show the set expression language for some dmn cells. If the expression language is changed from the default FEEL to any other expression language a blue indicator appears on the right side of the cell to show there is a changed expression language active. This does only work for every second cell.

![dmn_script_indicators](https://user-images.github

I will try and create a checklist of things to check before you commit. This is a living list that will reflect my own mistakes while committing to the project, so don't be afraid, every mistake has been made before.

So before you create your PR

• Read and interiorize this page, please
• git diff chec

Similar to the ProcessEngine we need to provide a DmnEngine bean which can be injected where needed.

Todo

• implement
• implement test
• document this in README (including list of features)

Is your feature request related to a problem? Please describe.
I have a list of strings and want to join/combine the strings into a single string.

Similar to Java's joining function:

joining(["a","b","c"])
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