username, password and flask_secret_key are now persisted in database

setup.py

@@ -0,0 +1,45 @@
+#!/usr/bin/python
+
+import binascii
+import getpass
+import os
+import base64
+
+from builtins import input
+
+import src.config_provider
+import src.sql
+import src.my_scrypt
+
+config = src.config_provider.getConfig()
+src.sql.connect(config['Document']['documentPath'])
+
+username = src.sql.getOption("username")
+
+if username:
+    print("Application has been already set up.")
+    exit(1)
+
+print("Please provide your desired login credentials")
+
+username = input("Username: ")
+
+password1 = getpass.getpass()
+password2 = getpass.getpass(prompt='Repeat the same password: ')
+
+if password1 == password2:
+    hash = src.my_scrypt.getVerificationHash(password1)
+
+    src.sql.setOption('username', username)
+    src.sql.setOption('password', binascii.hexlify(hash))
+
+    # urandom is secure enough, see https://docs.python.org/2/library/os.html
+    src.sql.setOption('flask_secret_key', base64.b64encode(os.urandom(24)))
+    src.sql.setOption('verification_salt', base64.b64encode(os.urandom(24)))
+    src.sql.setOption('encryption_salt', base64.b64encode(os.urandom(24)))
+
+    src.sql.commit()
+
+    print('Application has been set up. You can now login.')
+else:
+    print('Entered passwords are not identical!')