pgAdmin4 mirror issues [pgAdmin4]

Hi,

While fixing and testing Unicode issues throughout pgadmin4 nodes I found
bellow issues (other than Unicode) which was preventing me further testing.
So these need to checked in first before we can apply Unicode related issue
patch.

1. *event_trigger_sql.patch*: returns correct value of 'eventfunname' when
schema of of trgger function is other than public.

2.*check_constraint_sql.patch*: Wrong sql was generated for check
constraint when we rename table name and check name at the same time from
table edit mode.

3.*dependents_sql*.patch: dependents sql was failing because of following
issue.
On non utf-8 encoding database bellow type casting queries fail as it
treats 0 (zero) as null instead of integer.

SELECT 0::text;

SELECT CAST(0 AS text);

db error:
ERROR: null character not permitted

********** Error **********

ERROR: null character not permitted
SQL state: 54000

--

*Harshal Dhumal*
*Software Engineer*

EnterpriseDB India: http://www.enterprisedb.com
The Enterprise PostgreSQL Company