pgAdmin 4 commit: Fixes for function, procedure and trigger reverse SQL

Fixes for function, procedure and trigger reverse SQL. Fixes #1293. Fixes #1294

1. RM#1293 - SQL pane is not displaying GRANT queries in functions node
2. RM#1294 - Comments are not visible in sql pane for trigger functions and functions

Explanation:
Previously we we using 'get_defintion.sql' template to generate SQL for SQL pane for functions, procedure & trigger
functionsnode. 
but GRANT statements and COMMENTS changes were missing. In order to fix that, now we have used both 'create.sql' and
'get_definition.sql'templates to generate full SQL query for SQL pane. 

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=91559c622bdcbecb8ae9b8c53ba572258d7e3c3f
Author: Surinder Kumar <surinder.kumar@enterprisedb.com>

Modified Files
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.../databases/schemas/functions/__init__.py        | 49 ++++++++++++++++++++--
.../templates/function/pg/sql/9.1_plus/create.sql  | 27 ++++++++----
.../templates/function/pg/sql/9.2_plus/create.sql  | 26 ++++++++----
.../templates/function/pg/sql/9.5_plus/create.sql  | 25 +++++++----
.../function/ppas/sql/9.1_plus/create.sql          | 27 ++++++++----
.../function/ppas/sql/9.2_plus/create.sql          | 26 ++++++++----
.../function/ppas/sql/9.5_plus/create.sql          |  3 +-
.../procedure/ppas/sql/9.1_plus/create.sql         | 11 ++---
.../procedure/ppas/sql/9.2_plus/create.sql         | 10 +++--
.../procedure/ppas/sql/9.5_plus/create.sql         |  9 ++--
.../trigger_function/pg/sql/9.1_plus/create.sql    | 11 +++--
.../trigger_function/pg/sql/9.2_plus/create.sql    |  6 ++-
.../trigger_function/pg/sql/9.5_plus/create.sql    | 13 +++---
.../trigger_function/ppas/sql/9.1_plus/create.sql  | 11 +++--
.../trigger_function/ppas/sql/9.2_plus/create.sql  | 11 +++--
.../trigger_function/ppas/sql/9.5_plus/create.sql  | 13 +++---
16 files changed, 201 insertions(+), 77 deletions(-)