pgAdmin 4 commit: Resolved an issue related to no proper valid/invalid

Resolved an issue related to no proper valid/invalid event was
generated for the privilege control. Also, made changes in the
PrivilegeRoleModel, to allow to select a grantee only once for the
current user (as grantor), and omit them from other cell objects.

Valid/Invalid event was not properly triggered, whenever the child
attribute is a collection/model within a model (nested mode/collection
within model). This patch tried to take care of all such scenarios in
general.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=4adea4dc2596fb495c4df8129745b87c35b062a6

Modified Files
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.../server_groups/servers/static/js/privilege.js   | 187 ++++++++++++++---
.../servers/templates/servers/servers.js           |   9 +-
web/pgadmin/browser/static/js/datamodel.js         | 233 ++++++++++-----------
3 files changed, 283 insertions(+), 146 deletions(-)