Provide canonical url for name index

Author: lmrodriguezr

app/controllers/names_controller.rb

@@ -209,7 +209,7 @@ def show
       format.html
       format.json
       format.pdf do
-        response.set_header('Link', '<%s>; rel="cannonical"' % url_for(@name))
+        response.set_header('Link', '<%s>; rel="canonical"' % url_for(@name))
         render(
           template: 'names/show_pdf.html.erb',
           pdf: "#{@name.name} | SeqCode Registry",

app/helpers/application_helper.rb

@@ -1,6 +1,8 @@
 module ApplicationHelper
-  def cannonical_url
-    url_for(only_path: false, protocol: 'https', host: 'registry.seqco.de')
+  def canonical_url(opts = {})
+    url_for({
+      only_path: false, protocol: 'https', host: 'registry.seqco.de'
+    }.merge(opts))
   end
 
   def report_history(obj, text: 'Report history')

app/models/name.rb

@@ -661,7 +661,7 @@ def is_variant?(alt_spelling)
   # This method always return +nil+ for names that are not at (inferred) rank
   # of genus or species
   # 
-  # Find names similar to the current one (using the cannonical spelling
+  # Find names similar to the current one (using the canonical spelling
   # from +base_name+) with Levenshtein ≤ 3, considering a search space
   # defined by the taxonomic rank and +among+:
   # - valid: All validly published names of genera or species of the same genus

app/views/genomes/show.html.erb

@@ -1,5 +1,5 @@
 <% provide(:title, @genome.title) %>
-<% provide(:canonical_url, cannonical_url) %>
+<% provide(:canonical_url, canonical_url) %>
 
 <%=
   download_buttons([

app/views/names/index.html.erb

@@ -4,6 +4,7 @@
   npar[:sort]   = @sort if @sort.present?
   npar[:user]   = @user.username if @user.present?
 %>
+<% provide(:canonical_url, canonical_url(npar)) %>
 <%= download_buttons(
       [[names_url(npar.merge(format: :json)), 'file-code', 'JSON']]
     ) %>

app/views/names/show.html.erb

@@ -1,5 +1,5 @@
 <% provide(:title, @name.abbr_name_raw) %>
-<% provide(:canonical_url, cannonical_url) %>
+<% provide(:canonical_url, canonical_url) %>
 <% provide(:description, @name.page_description) %>
 
 <%= render(partial: 'title') %>

app/views/strains/show.html.erb

@@ -1,5 +1,5 @@
 <% provide(:title, @strain.title) %>
-<% provide(:canonical_url, cannonical_url) %>
+<% provide(:canonical_url, canonical_url) %>
 
 <%=
   download_buttons([