* [refactor] a better set-only-once implementation with child tables

* [refactor] document.is_child_table_same(fieldname)

* [refactor] tests

* [refactor] tests

* [test] catch timeout reason

* [minor] edit in full page more prominent

* [minor] tests

* Revert "[fix] Domain Setting patch (#4464)"

This reverts commit cd32e87b98.

* Revert "[hotfix] update charts to latest (#4460)"

This reverts commit 60036a0b50.

* [fix] Domain Setting patch

* minor fix

* Update domain.py

* [fix] treeview fixes, adding title field

* [fix] [tree] add a flag is_root

Made the Regex case insensitive and changed the regex to show only the lowercase (which will save some space). Added the aw and wg for german answer and forwarding.

I will add more languages based on this list https://en.wikipedia.org/wiki/List_of_email_subject_abbreviations after more research.

Make the close and reopen button for flexible for multiple status and custom status, like here:

https://github.com/frappe/erpnext/pull/11381

* bring throttling limit from site_config rather than from a fixed 60

* update key

* fix dynamic link in list filters

* search parent in cur_page if not in cur_list

* Nestedset model fixes for changing parent

* Rename function of File

[minor][hotfix] initialize script property in page.py

no_letterhead in form_dict was missing

* added PyMYSQL instead mysqlclient-python

* added pymysql import

* fixed db module import

* foxed self._conn wrapper

* updated cursor migration

* removed existent converters

* some more fixes towards API port

* modified travis

* updated doctype and revereted yml

* modified travis

* refreshed logging

* raw fix

* moved from hard coded constants to declarable instances

* moved from hard coded constants to declarable instances

* refactoring and logging

* moved to global import declaration

* fixed codacy

* unfixed codacy

* minor fix

* binary_type has a single

* deprecated alternative

* merged with latest

* fixed merge conflicts

* using deprecated alternative

* raw fix

* stupid fix

* using StringTypes instead

* brutal hack

* log

* tundebazy to the rescue

* fixed content_hash error

* frappe/database.py

* frappe/database.py

* updated database.py

* updated requirements

* updated requirements

* fixed codacy

* fixed codacy

* moved from DatabaseOperationalError to pymysql.InternalError

* moved from DatabaseOperationalError to pymysql.InternalError

* fixed codacy

* empty commit

* fixed codacy

* fixed codacy

[fix] Not able to export general ledger report's data if data has illegal characters

[hotfix] setup complete state colors

Revert "[hotfix] setup complete state colors"

[hotfix] setup complete state colors