Improve adding tags

[beanformer]

Specifying the project and assigning tags to the data worked without any complications. the tags were accepted (highlighted in grey) when I typed a comma.

In the following window, the tabs for “data type” and “data format” were only accepted (highlighted in grey) when I clicked somewhere else. It would be nice, if it worked with separating commas here too. Alternatively, I would suggest to indicate that an entry can be confirmed by clicking somewhere else.