refactor: Remove unused email sending functionality and update invoice status descriptions

Website/server_steering.py

@@ -230,6 +230,29 @@ class instace:
     def __init__():
         return list()
 
+    def new_trial(name: str) -> bool:
+        """
+        Generates a new trial instance with the subdomain [name].invario.eu
+
+        Input:
+        - name -> String
+
+        Output:
+        - bool if the creation of the instance works (True: creation worked; False: didnt work)
+
+        manage-tenant.sh trial <tenant_id> [port] [days]
+        """
+        port_starter = 10002
+        port = port_starter
+        for i in instace.list():
+            port =+ 1
+        
+        if execute_script(_var, _cmd, "trial", clear_special(name), port):
+            add_dns(name, port)
+            return int(port)
+        else:
+            return False
+
     def new(name: str) -> int:
         """
         Generates a new instance with the subdomain [name].invario.eu