Generating id of TD for config

[egekorkan]

Currently, the config always contains the id test-thing. However, the id can be copy pasted automatically from TD so that the user does not have to find it manually. This will fail for TDs that do not have an id. For that, an id should be generated automatically after consumption if there is need for security. This id should be visible in the TD and the user should be informed. After that, it can be moved to the config as well.