Change keygen.py to not require root

keygen.py now recommends that you run it as the user you want to have
ownership of secret.key and uploadkeys (such as www-data for nginx).
Then, if uploadkeys or secret.key don't exist, they will be created with
the correct ownership.

keygen.py

@@ -8,11 +8,6 @@ import sys
 import os
 
 
-# Check if the script was run as root
-if os.geteuid() != 0:
-    exit("Root privileges are necessary to run this script.\nPlease try again as root or using `sudo`.")
-
-
 # Check if encryption key already exists
 enckey = Path(settings.ENCKEY_PATH)
 if enckey.is_file():
@@ -63,6 +58,12 @@ def ask_yn(msg):
     return proceed
 
 
+start = ask_yn("Have you run this program as the correct user (for example, nginx uses www-data)? [y/n] ")
+if not start:
+    print("Please run this as the correct user with: sudo su [user] -s /bin/sh -c 'python3 keygen/py'")
+
+else:
+
     N = 64  # Size of token
 
     # Generate key