Fix Plan grant_number bug

[johnpinto1]

"undefined method `grant_number' for #Plan:0x00007fd5384ec108\nDid you mean? grant_id"

Change:

• replacing Plan grant_number by grant&.value in files.

This is a fix based on comment by @briri in a closed PR #3028 (comment)

Anyway, it looks like maybe its trying to reference grant_number in a few places. Can you update these as part of this PR when you have a chance?

Here's the output of a quick grep on the app directory:

briley@CDL-BRILEY-9M roadmap % grep -r 'grant_number' app 
app/models/exported_plan.rb:    plan.grant_number
app/models/concerns/exportable_plan.rb:    if grant_number.present?
app/models/concerns/exportable_plan.rb:      csv << [_("Grant number: "), _("%{grant_number}") % { grant_number: grant_number }]
app/javascript/src/plans/editDetails.js:              $('#grant_number_info').html(grantNumberInfo(grantId));
app/javascript/src/plans/editDetails.js:            $('#grant_number_info').html(grantNumberInfo(''));
app/views/plans/_project_details.html.erb:          <span class="text-muted" id="grant_number_info">Grant number: <%= plan.grant&.value %></span>
app/views/shared/export/_plan_txt.erb:  <% if @plan.grant_number.present? %>
app/views/shared/export/_plan_txt.erb:<%= _("Grant number: ") + @plan.grant_number %>
app/views/api/v0/statistics/plans.json.jbuilder:  json.grant_number   plan.grant_number
app/views/api/v0/plans/index.json.jbuilder:  json.grant_number   plan.grant_number

[raycarrick-ed]

Looks good to me.

[briri]

looks great. Thanks for this @johnpinto1!