pgAdmin 4 commit: Introducing the infrastructure for colleciton of the

Introducing the infrastructure for colleciton of the subnodes listing,
creation, and editing within the properties panel infrastructure.

We do use the backgrid.js for listing the subnode collection, and for
editing/creating new object for the subnode, we do use the same
infrastructure using the backform.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=c1503ade47e3401a8b6b99a075f8b6b609861a3b
Author: Khushboo Vashi 

Modified Files
--------------
libraries.txt                                      |    2 +
.../templates/server_groups/server_groups.js       |    9 +-
.../browser/templates/browser/js/browser.js        |   12 +-
web/pgadmin/browser/templates/browser/js/node.js   |  263 +-
web/pgadmin/static/css/backgrid/backgrid.css       |  240 ++
web/pgadmin/static/css/backgrid/backgrid.min.css   |    1 +
web/pgadmin/static/css/bootstrap-datepicker3.css   |  890 +++---
.../static/css/bootstrap-datepicker3.min.css       |    8 +
web/pgadmin/static/css/overrides.css               |  115 +-
web/pgadmin/static/js/backform.pgadmin.js          |  253 +-
web/pgadmin/static/js/backgrid/backgrid.js         | 2883 ++++++++++++++++++++
web/pgadmin/static/js/backgrid/backgrid.min.js     |    8 +
web/pgadmin/static/js/backgrid/backgrid.pgadmin.js |  234 ++
web/pgadmin/static/js/bootstrap-datepicker.js      |  205 +-
web/pgadmin/static/js/bootstrap-datepicker.min.js  |    4 +-
web/pgadmin/templates/base.html                    |   13 +
16 files changed, 4513 insertions(+), 627 deletions(-)