Multiple include with variables: either all or non files are included

[bugy]

If you have a list with incuded configs, some of which require certain parameters and others don't, Script Server is not including anything untill required parameters from every element is defined.

Steps to reproduce:

1. Define a script with param1 text, without defaults
2. Define 2 files to include: include2.json (with param2) and include3.json (with param3)
3. add the following include config: ["include2.json", "include${param1}.json"]
4. Load the script on UI

Actual result: only param1 is shown
Expected result: param1 + param2 are shown.