pgAdmin 4 commit: Fixes #1283, #1287 - Do not show null description in

Fixes #1283, #1287 - Do not show null description in the create mode,
corrected the index expression on table node.

Reported by Thom Brown.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=6036c431b0ab714e2aabaa649c389fbfcbd69173
Author: Murtuza Zabuawala <murtuza.zabuawala@enterprisedb.com>

Modified Files
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.../databases/schemas/tables/indexes/__init__.py    |  8 ++++----
.../tables/indexes/templates/index/js/index.js      | 18 ++++++++++++------
.../tables/templates/index/sql/9.1_plus/alter.sql   |  2 +-
.../tables/templates/index/sql/9.1_plus/create.sql  | 21 ++++++++++++++-------
4 files changed, 31 insertions(+), 18 deletions(-)