Issue boards new issue form

## What does this MR do?

Adds a new issue form into the issue boards lists.

## Screenshots (if relevant)

![Screen_Shot_2016-10-03_at_14.57.30](/uploads/17fe6cd37bd020a2ee1688e0b496c18f/Screen_Shot_2016-10-03_at_14.57.30.png)

![Screen_Shot_2016-10-03_at_14.57.32](/uploads/c3f12bcb9ff9a0e7ce5b0bb06dfb0dd7/Screen_Shot_2016-10-03_at_14.57.32.png)

## What are the relevant issue numbers?

Part of #21219

See merge request !6653