Features, fields and users

Hi,
1) Fields: adding so you choose a dropdown meny so u can add it to table more easy that it was in old search view, the check box. Now u have to click on message and find the field there and add it to table. or open the fields meny in the list. I think a drop down in table and just that function of adding it to table would be smooth
2) Users: be able to choose more permission when adding a user. like u can do in the rest api.
also be able to export users in contentpack.
and function to pwd reset and one time pwd login forced to change pwd when login first time, checkbock for enable that per user.

## Why?

## Your Environment

* Graylog Version:
* Elasticsearch Version:
* MongoDB Version:
* Operating System:
* Browser version: