pgAdmin 4 commit: Allow some objects to be dragged/dropped into the Que

Allow some objects to be dragged/dropped into the Query Tool to insert their signature into the query text. Fixes #4139

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=173b812b932aecede3dfe610977d8307fa5165bc
Author: Aditya Toshniwal <aditya(dot)toshniwal(at)enterprisedb(dot)com>

Modified Files
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docs/en_US/query_tool.rst | 5 +
docs/en_US/release_notes.rst | 1 +
docs/en_US/release_notes_4_10.rst | 15 +++
docs/en_US/tree_control.rst | 6 ++
web/pgadmin/browser/static/js/browser.js | 44 +++++++-
web/pgadmin/static/js/tree/tree.js | 85 +++++++++++++++
web/pgadmin/static/js/utils.js | 116 +++++++++++++++++++++
web/pgadmin/static/scss/_pgadmin.style.scss | 12 +++
web/pgadmin/tools/sqleditor/static/js/sqleditor.js | 23 ++++
web/regression/javascript/pgadmin_utils_spec.js | 86 ++++++++++++++-
10 files changed, 390 insertions(+), 3 deletions(-)