Renamed general and mode constants and implemented a check to verify that constants are just defined ones over the whole repository

roles/web-app-mybb/templates/default.conf.j2

@@ -0,0 +1,44 @@
+upstream mybb {
+    server application:9000 weight=5;
+}
+
+server {
+    listen 80;
+    error_log /proc/self/fd/2 {% if MODE_DEBUG | bool %}debug{% else %}warn{% endif %};
+    root /var/www/html;
+    index index.html index.php;
+
+    location / {
+        try_files $uri $uri/ /index.php?$args;
+    }
+
+    location ~ inc/ {
+        internal;
+    }
+
+    location ~ ^/(images|cache|jscripts|uploads)/ {
+        access_log off;
+    }
+
+    location ~ \.php$ {
+        try_files $uri =404;
+        fastcgi_split_path_info ^(.+\.php)(/.+)$;
+        fastcgi_pass mybb;
+        fastcgi_index index.php;
+        include fastcgi_params;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        fastcgi_param PATH_INFO $fastcgi_path_info;
+
+        # proxy timeouts
+        proxy_connect_timeout       300s;
+        proxy_send_timeout          300s;
+        proxy_read_timeout          300s;
+        send_timeout                300s;
+        
+        # fastcgi timeouts
+        fastcgi_read_timeout        300s;
+        fastcgi_send_timeout        300s;
+        fastcgi_connect_timeout     300s;
+
+    }
+}