Add coverage and planning data sections

app/views/_tailwind/applications/_address_search.html.erb

@@ -39,3 +39,37 @@
   </div>
   <%= pa_link_to "View more latest applications", applications_path, class: "text-2xl pt-6" %>
 </div>
+
+<section class="py-12 mt-8 text-2xl border-t border-light-grey2 text-navy">
+  <h2 class="pb-2 text-3xl font-bold text-navy font-display">Coverage</h2>
+  <p class="pt-4">
+    We currently cover
+    <%= Authority.percentage_population_covered_by_all_active_authorities.to_i %>% of
+    Australia's population within <%= Authority.active.count %> authorities.
+    For this number we're only counting places where the main planning authority is covered.
+    As an example, most of Victoria is covered by the SPEAR system but not all Victorian
+    planning applications go through it. So, we don't include SPEAR in our population count.
+  </p>
+  <p class="pt-4">
+    We don't yet cover the whole country, but we are working on it.
+    New authorities are being added all the time.
+  </p>
+  <p class="pt-4">
+    If you are a programmer and would like to write a scraper for your local authority,
+    or work for a local authority and would like to make your data available,
+    <%= pa_link_to "find out how you can get involved", get_involved_path %>.
+  </p>
+</section>
+
+<section class="py-12 text-2xl border-t text-navy border-light-grey2">
+  <%# TODO: Better heading? %>
+  <h2 class="pb-2 text-3xl font-bold text-navy font-display">Planning Data</h2>
+  <p class="pt-4">
+    From time to time planning authorities change their websites which breaks the scrapers
+    that gather the planning data. Help by providing a
+    <%= pa_link_to "donation", donate_url %> to help us fix it.
+  </p>
+  <p class="pt-4">
+    <%= pa_link_to "Check if planning data is broken for your authority", authorities_path %>
+  </p>
+</section>