refactor: replace custom CRM with Monica fork

nginx_app.conf

@@ -0,0 +1,22 @@
+location / {
+    # try to serve file directly, fallback to rewrite
+    try_files $uri @rewriteapp;
+}
+
+location @rewriteapp {
+    # Redirect .well-known urls (https://en.wikipedia.org/wiki/List_of_/.well-known/_services_offered_by_webservers)
+    rewrite .well-known/carddav /dav/ permanent;
+    rewrite .well-known/caldav /dav/ permanent;
+    rewrite .well-known/security.txt$ /security.txt permanent;
+
+    # Old carddav url
+    rewrite carddav/(.*) /dav/$1 permanent;
+
+    # rewrite all to app.php
+    rewrite ^(.*)$ /index.php/$1 last;
+}
+
+location ~ ^/(app|app_dev|config)\.php(/|$) {
+    try_files @heroku-fcgi @heroku-fcgi;
+    internal;
+}