pgAdmin 4 commit: Fix an error where 'false' string is displayed when w

Fix an error where 'false' string is displayed when we add a new parameter in the Parameters tab,
also clear the old value when the user changes the parameter name.

Corrected the implementation of BooleanCellFormatter.

Fixes #4753

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=55c6fa0d93440ad551258802dc1bf3927665fe2b

Modified Files
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docs/en_US/release_notes_4_14.rst                               | 1 +
web/pgadmin/browser/server_groups/servers/static/js/variable.js | 3 ++-
web/pgadmin/static/js/backgrid.pgadmin.js                       | 3 ++-
3 files changed, 5 insertions(+), 2 deletions(-)