Configure default issue board
Description
The first Board (issue board) record is shown when visiting /boards. This is because we simply use the first record returned https://gitlab.com/gitlab-org/gitlab-ce/blob/79d50538c4c633dd35b6182ba4d08d4eba7576fc/app/helpers/boards_helper.rb#L3
Proposal
Provide a configuration option to edit the default board displayed for a project (when loading /boards).
Links / references
There have been numerous discussions around changing the /issues link to go directly to the /boards link. However there is no feature request for setting the default board.