pgAdmin 4 commit: Improved the functionality of enable/disable theauto

Improved the functionality of enable/disable the auto-collection of
the graph data.

- Dashboard is intereseted only on the current selected object in the
  browser tree. And, not the one, which was got disconnected.
- Disable the auto-collection of data selectively, and only when the
  selected object got disconnected, and not when changing back to the
  Dashboard panel (as per Aditya).

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=5ff2942b4d09106c211fdb09e9abd6803239964b

Modified Files
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web/pgadmin/dashboard/static/js/dashboard.js | 45 ++++++++++++++++++++++------
1 file changed, 36 insertions(+), 9 deletions(-)