Patch some changes/fixes from 0.8 branch

Fix Gesior signature double dollar $$
Add some missing <br/> to online page
Use  $config['last_kills_limit'] in lastkills.php
Fix save_ranks.php: getLastError();
Fix PHPMailer autoloader
Fix leaking sensitive informations on MySQL Connection Fail
Add nginx-sample.conf
Change myaac_monsters.loot to text
Add more files to ignore file

nginx-sample.conf

@@ -0,0 +1,25 @@
+server {
+        listen 80;
+        root /home/otserv/www/public;
+        index index.php;
+        server_name your-domain.com;
+
+        location / {
+                try_files $uri $uri/ /index.php;
+        }
+
+        location ~ \.php$ {
+                include snippets/fastcgi-php.conf;
+                fastcgi_read_timeout 240;
+                fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
+        }
+
+        location ~ /\.ht {
+                deny all;
+        }
+
+        location /system {
+           deny all;
+           return 404;
+        }
+}