pgAdmin 4 commit: Fix the issue with Jinja conditions in Foreign Data W

Fix the issue with Jinja conditions in Foreign Data Wrappers, Foreign Servers, User Mapping.

I also did some re-formatting & re-factoring to code to remove all the duplicate code.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=c34fdaf37dc2ead2c4d4894e485cd2e08723f4a5
Author: Murtuza Zabuawala <murtuza(dot)zabuawala(at)enterprisedb(dot)com>

Modified Files
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.../databases/foreign_data_wrappers/__init__.py | 195 ++++++++---------
.../foreign_servers/__init__.py | 177 +++++++---------
.../foreign_servers/js/foreign_servers.js | 1 +
.../foreign_servers/sql/9.3_plus/create.sql | 12 +-
.../foreign_servers/sql/default/create.sql | 12 +-
.../foreign_servers/sql/default/update.sql | 42 ++--
.../foreign_servers/user_mapping/__init__.py | 232 +++++++++------------
.../templates/user_mappings/js/user_mappings.js | 1 +
.../templates/user_mappings/sql/default/create.sql | 13 +-
.../templates/user_mappings/sql/default/update.sql | 43 ++--
.../js/foreign_data_wrappers.js | 1 +
.../foreign_data_wrappers/sql/9.3_plus/create.sql | 12 +-
.../foreign_data_wrappers/sql/9.3_plus/update.sql | 42 ++--
.../foreign_data_wrappers/sql/default/create.sql | 12 +-
.../foreign_data_wrappers/sql/default/update.sql | 42 ++--
web/pgadmin/browser/server_groups/servers/utils.py | 65 ++++++
16 files changed, 414 insertions(+), 488 deletions(-)