pgAdmin 4 commit: Fixed the following issues for the new query tool:

Fixed the following issues for the new query tool:
1) Failed to fetch query history error sometimes.
2) In copy paste row, if a copied row has [null], then those are pasted as an empty string.
3) When Data output is empty, show an empty grid.
4) Schema diff generates a script button resulting in an empty window. Fixes #7306.
5) Detach the DataOutput panel > Try editing text cell > Text editor is hidden behind the data output panel

refs #6131

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=25b89f76242da9f98c3aa099322079de52b6f155
Author: Aditya Toshniwal <aditya(dot)toshniwal(at)enterprisedb(dot)com>

Modified Files
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web/pgadmin/static/js/SchemaView/index.jsx | 4 ++--
web/pgadmin/static/js/helpers/Layout.jsx | 2 +-
web/pgadmin/static/scss/_codemirror.overrides.scss | 5 +++--
web/pgadmin/tools/erd/__init__.py | 1 +
.../js/erd_tool/ui_components/BodyWidget.jsx | 3 +++
.../static/js/components/QueryToolComponent.jsx | 2 +-
.../js/components/QueryToolDataGrid/CopyData.js | 2 ++
.../js/components/QueryToolDataGrid/Editors.jsx | 5 ++---
.../js/components/QueryToolDataGrid/index.jsx | 8 ++------
.../static/js/components/sections/Query.jsx | 4 +++-
.../static/js/components/sections/QueryHistory.jsx | 18 ++++++++++++++----
.../static/js/components/sections/ResultSet.jsx | 22 +++++++++++++++-------
.../tools/sqleditor/static/js/show_query_tool.js | 2 ++
.../tools/sqleditor/static/js/sqleditor_title.js | 2 +-
14 files changed, 52 insertions(+), 28 deletions(-)