function apiGetSettings (req, res, next) {
  const cont3xt = req.user.cont3xt ?? {};
  res.send({
    success: true,
    settings: cont3xt.settings ?? {},
    linkGroup: cont3xt.linkGroup ?? {},
    selectedOverviews: cont3xt.selectedOverviews ?? {}
  });
}
GET - /api/settings

Returns all the settings relevant for the cont3xt settings page
@name /settings
@returns {boolean} success - True if the request was successful, false otherwise
@returns {object} settings - General cont3xt settings
@returns {LinkGroup[]} linkGroups - An array of link groups that the logged in user can view/edit
@returns {object} selectedOverviews - A mapping of the selected overview per iType, of shape {[iType]: overviewId}