Use optional parameter to set column class

- Fixes the extremely long class name on the post versions view
- Can now use one value instead of having to set th and td
- Added missing column classes on all tables

app/views/ip_addresses/_index.html.erb

@@ -16,7 +16,7 @@
   <% t.column "Date" do |ip| %>
     <%= time_ago_in_words_tagged ip.created_at %>
   <% end %>
-  <% t.column do |ip| %>
+  <% t.column column: "ip-info" do |ip| %>
     <%= link_to "IP info", "https://ipinfo.io/#{ip.ip_addr}" %>
   <% end %>
 <% end %>

app/views/ip_addresses/_index_by_ip_addr.html.erb

@@ -10,7 +10,7 @@
   <% t.column "Uses" do |ip| %>
     <%= link_to ip.count_all, ip_addresses_path(search: { ip_addr: ip.to_s }) %>
   <% end %>
-  <% t.column "" do |ip| %>
+  <% t.column column: "ip-info" do |ip| %>
     <%= link_to "IP info", "https://ipinfo.io/#{ip.ip_addr}" %>
   <% end %>
 <% end %>