Add Nginx Redirects for Old Post URLs

The original site did not nest posts under the `/post/` path & we've
seen some 404s come in from old links. This set of redirects should fix
those 404s.

README.md

@@ -125,8 +125,9 @@ list has been trimmed down a bit, we'll actually migrate & deploy the site.
 * General
     * Haskell `manage.hs` script for running server & client watchers in one
       terminal(see SESE website repo).
-    * Migration script from old django DB to new DB
     * Clean shutdowns using signals
+    * Add `/health` route for docker health checks - should hit the DB. Write
+      custom production logger that ignores requests to the route.
 * Blog Posts
     * Paginated list route?
     * Prev/Next links on details page

deploy/nginx/nginx.conf

@@ -111,6 +111,15 @@ server {
         set $api_server api;
         proxy_pass http://$api_server:9001$1$is_args$args;
     }
+
+    # Redirects for Old Post URLs
+    rewrite ^/setup-minecraft-mcmyadmin-on-slackware-141/?$ /post/setup-minecraft-mcmyadmin-on-slackware-141/ permanent;
+    rewrite ^/declarative-specifications-of-user-profiles-with-the-nix-package-manager/?$ /post/declarative-specifications-of-user-profiles-with-the-nix-package-manager/ permanent;
+    rewrite ^/using-selectizejs-autocompletes-with-django-ajax/?$ /post/using-selectizejs-autocompletes-with-django-ajax/ permanent;
+    rewrite ^/build-a-bootstrap-theme-from-a-vim-color-scheme/?$ /post/build-a-bootstrap-theme-from-a-vim-color-scheme/ permanent;
+    rewrite ^/adding-draft-approval-workflow-to-formidable-entries/?$ /post/adding-draft-approval-workflow-to-formidable-entries/ permanent;
+    rewrite ^/automatically-upgrading-a-sendy-instance/?$ /post/automatically-upgrading-a-sendy-instance/ permanent;
+    rewrite ^/custom-404-page-headway-wordpress/?$ /post/custom-404-page-headway-wordpress/ permanent;
 }
 
 server {