Added ability to log in with jellyfin credentials

The new jellyfin_login and admin_only allow anyone use their username and
password from jellyfin to login to the admin page, and restrict this to jellyfin
admins only, respectively.

jellyfin_accounts/web_api.py

@@ -7,7 +7,6 @@ import secrets
 import time
 from __main__ import config, config_path, app, g
 from __main__ import web_log as log
-from jellyfin_accounts.login import auth
 from jellyfin_accounts.validate_password import PasswordValidator
 
 def resp(success=True, code=500):
@@ -51,6 +50,8 @@ jf = Jellyfin(config['jellyfin']['server'],
               config['jellyfin']['device'],
               config['jellyfin']['device_id'])
 
+from jellyfin_accounts.login import auth
+
 attempts = 0
 success = False
 while attempts != 3:
@@ -262,7 +263,6 @@ def deleteInvite():
 @auth.login_required
 def get_token():
     token = g.user.generate_token()
-    log.debug('Token generated')
     return jsonify({'token': token.decode('ascii')})