feat: add How to support us dropdown and Sponsors to navigation

- Move Volunteer and Fundraise into How to support us dropdown
- Add Sponsors as first-level nav item
- Add Sponsors to Community dropdown
- Link Donate to Enthuse instead of /donate page
- Change Donate button to link directly to Enthuse

Author: mroderick

app/views/layouts/_navigation.html.haml

@@ -17,6 +17,7 @@
           = link_to '#', {'role': 'button', 'aria-expanded': 'false', 'data-bs-toggle': 'dropdown', class: 'nav-link border-0 dropdown-toggle', id: 'navbarDropdownMenuLinkCommunity'} do
             Community
           %ul.dropdown-menu{'aria-labelledby': 'navbarDropdownMenuLinkCommunity'}
+            %li= link_to 'Sponsors', sponsors_path, class: 'dropdown-item'
             %li= link_to 'Coaches', coaches_path, class: 'dropdown-item'
             %li= link_to 'Impact Report', 'https://impact-report.codebar.io/', class: 'dropdown-item'
             %li= link_to 'codebar Stories Podcast', codebar_stories_podcast_path, class: 'dropdown-item'
@@ -25,11 +26,15 @@
             %li.dropdown-divider
             %li= link_to 'Tutorials', 'http://tutorials.codebar.io', class: 'dropdown-item'
         %li.nav-item
-          = link_to volunteer_path, class: 'nav-link border-0' do
-            Volunteer
-        %li.nav-item
-          = link_to fundraise_path, class: 'nav-link border-0' do
-            Fundraise
+          = link_to sponsors_path, class: 'nav-link border-0' do
+            Sponsors
+        %li.nav-item.dropdown
+          = link_to '#', {'role': 'button', 'aria-expanded': 'false', 'data-bs-toggle': 'dropdown', class: 'nav-link border-0 dropdown-toggle', id: 'navbarDropdownMenuLinkSupport'} do
+            How to support us
+          %ul.dropdown-menu{'aria-labelledby': 'navbarDropdownMenuLinkSupport'}
+            %li= link_to 'Volunteer', volunteer_path, class: 'dropdown-item'
+            %li= link_to 'Fundraise', fundraise_path, class: 'dropdown-item'
+            %li= link_to 'Donate', 'https://enthuse.com/@codebar/donate', class: 'dropdown-item', target: '_blank', rel: 'noopener noreferrer'
         %li.nav-item
           = link_to "http://jobs.codebar.io/", class: 'nav-link border-0' do
             Job Board
@@ -53,5 +58,5 @@
             = render 'layouts/member_menu'
         %li.nav-item.d-flex.align-items-center
           %div.nav-link.d-flex.gap-2.py-0
-            = link_to donate_path, class: 'btn btn-sm fs-6 fw-semibold btn-primary' do
+            = link_to 'https://enthuse.com/@codebar/donate', class: 'btn btn-sm fs-6 fw-semibold btn-primary', target: '_blank', rel: 'noopener noreferrer' do
               Donate