[hotfix] encode traceback for frappe.log_error method

[fix] set default role specified in Portal Settings while signup as website user

* [fix] if supervisor is restarting, do not queue the jobs

* Update scheduler.py

[hotfix] minor fixes for text editor, report print and 2fa

Fixed encoding issue on exporting report in csv

Changed order to avoid deadlock

[hotfix] global search: ignore results with non-existent doctypes

* [hotfix] fixes for UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 17: ordinal not in range(128)

* [hotfix] datetime field filters issue

This reverts commit a722b64eb1.

default value can't be true

after set `opts.is_private` false, is private still true.