Permission Checks In License Service

[alexbrdn]

Added permission checks in license service for creating licenses and related objects where missing.
Deleted executable class LicenseImporter.java, which was designed to import license data from command line and has since been replaced by the functionality of ComponentUploadPortlet

closes #106

This PR introduces incompatible changes in Thrift API.
Increase the minor version after merging

[maxhbr]

Increase the minor version after merging

this should be formulated as tag

[maxhbr]

You remove the file LicenseImporter.java without a replacement and without mentioning it in the commit message or PR description.

Is it just unused?

Other than that the code looks good.

[alexbrdn]

1. Agreed
2. I asked about LicenseImporter.java in the issue, got no reply, and made a decision on my own. I probably should've mentioned it here, too.

[alexbrdn]

@MaximilianHuber, would you give an "Approved" review, please?

[mcjaeger]

ehem, suggestions how to test this are welcome - like I shall write a thrift client? I am testing for "everything behaves normal" then ... / looking at the integration test suite.

[alexbrdn]

An important thing to test is that importing license data through ComponentUploadPortlet still works. Given that the portlet is only available to admins, it's hard to test the permission checks without writing a thrift client or temporarily changing page permissions to try license import with a normal user.

[mcjaeger]

is it that assigned white list selection for a todo is not imported? (which could be fine, just mentioning it if this was intended)

Import from export of another branch (Export Spreadsheet at Clearing Status) seems to work fine. The user was with role ADMIN but was imported (not the setup admin).

Please do not merge as I would like to have #352 before version jump.

[mcjaeger]

tested with license import export in various combinations