pgAdmin 4 commit: 1. Fix syntax error when adding more than one column

1. Fix syntax error when adding more than one column to the existing table. Fixes #4162
2. Fix syntax error when creating a table with a serial column. Fixes #4284

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=90a45557b95c1288f393de294ab0b834ca2f6ff7

Modified Files
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docs/en_US/release_notes_4_7.rst                                    | 4 +++-
.../schemas/tables/templates/columns/sql/10_plus/create.sql         | 6 +++---
.../schemas/tables/templates/columns/sql/10_plus/update.sql         | 6 +++---
.../schemas/tables/templates/tables/sql/10_plus/create.sql          | 4 +++-
4 files changed, 12 insertions(+), 8 deletions(-)