Save epic navigate choice to BE
Follow up of https://gitlab.com/gitlab-org/gitlab-ee/issues/4936
The choice (months, weeks, or quarters) is saved to the database per the user. So if the user makes a different choice, that choice is saved and will be remembered anywhere else they log in. This is per the entire instance. So this one choice carries over to all roadmap views that the user views.
Implementing this should fix the filtering issue spotted in https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/5798#note_79647701:
[…] if I start a search in the Quarters or Weeks views, the view is changed to the Months view. We should keep the currently selected view when starting a search.
Edited by Pedro Moreira da Silva