Working for pip and "normal" start for python3 and python2

cps/editbooks.py

@@ -22,7 +22,7 @@
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 # opds routing functions
-from cps import config, language_table, get_locale, app, ub, global_WorkerThread, db
+from . import config, language_table, get_locale, app, ub, global_WorkerThread, db
 from flask import request, flash, redirect, url_for, abort, Markup, Response
 from flask import Blueprint
 import datetime
@@ -30,14 +30,14 @@ import os
 import json
 from flask_babel import gettext as _
 from uuid import uuid4
-import helper
-from helper import order_authors, common_filters
+from . import helper
+from .helper import order_authors, common_filters
 from flask_login import current_user
-from web import login_required_if_no_ano, render_title_template, edit_required, \
+from .web import login_required_if_no_ano, render_title_template, edit_required, \
     upload_required, login_required, EXTENSIONS_UPLOAD
-import gdriveutils
+from . import gdriveutils
 from shutil import move, copyfile
-import uploader
+from . import uploader
 from iso639 import languages as isoLanguages
 
 editbook = Blueprint('editbook', __name__)