further refactored user login

cps/web.py

@@ -24,7 +24,7 @@ import mimetypes
 import chardet  # dependency of requests
 import copy
 
-from flask import Blueprint, jsonify, g
+from flask import Blueprint, jsonify
 from flask import request, redirect, send_from_directory, make_response, flash, abort, url_for
 from flask import session as flask_session
 from flask_babel import gettext as _
@@ -54,6 +54,8 @@ from .usermanagement import login_required_if_no_ano
 from .kobo_sync_status import remove_synced_book
 from .render_template import render_title_template
 from .kobo_sync_status import change_archived_books
+from .services.worker import WorkerThread
+from .tasks_status import render_task_status
 
 feature_support = {
     'ldap': bool(services.ldap),
@@ -79,7 +81,7 @@ except ImportError:
 
 
 @app.after_request
-def add_security_headers_and_shelves(resp):
+def add_security_headers(resp):
     csp = "default-src 'self'"
     csp += ''.join([' ' + host for host in config.config_trustedhosts.strip().split(',')])
     csp += " 'unsafe-inline' 'unsafe-eval'; font-src 'self' data:; img-src 'self'"
@@ -98,9 +100,6 @@ def add_security_headers_and_shelves(resp):
     resp.headers['X-Frame-Options'] = 'SAMEORIGIN'
     resp.headers['X-XSS-Protection'] = '1; mode=block'
     resp.headers['Strict-Transport-Security'] = 'max-age=31536000;'
-
-    g.shelves_access = ub.session.query(ub.Shelf).filter(
-        or_(ub.Shelf.is_public == 1, ub.Shelf.user_id == current_user.id)).order_by(ub.Shelf.name).all()
     return resp