pgAdmin 4 commit: Preferences dialogue. Patch by Ashesh and Khushboo Va

Preferences dialogue. Patch by Ashesh and Khushboo Vashi.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=5ea822f33e14f7fc9160077f67d6d3df40dbed00

Modified Files
--------------
web/config.py | 2 +-
web/pgadmin/__init__.py | 2 +-
web/pgadmin/browser/__init__.py | 134 +++++-
web/pgadmin/browser/collection.py | 51 ++
web/pgadmin/browser/server_groups/__init__.py | 27 +-
.../browser/server_groups/servers/__init__.py | 23 +-
.../server_groups/servers/databases/__init__.py | 5 +-
.../server_groups/servers/roles/__init__.py | 11 +-
.../server_groups/servers/tablespaces/__init__.py | 6 -
web/pgadmin/browser/utils.py | 27 +-
web/pgadmin/model/__init__.py | 150 ++++++
web/pgadmin/preferences/__init__.py | 137 ++++++
web/pgadmin/preferences/static/css/preferences.css | 40 ++
.../preferences/templates/preferences/index.html | 8 +
.../templates/preferences/preferences.js | 374 +++++++++++++++
web/pgadmin/settings/__init__.py | 9 +-
web/pgadmin/settings/settings_model.py | 111 -----
web/pgadmin/static/js/backform.pgadmin.js | 5 +-
web/pgadmin/utils/__init__.py | 21 +-
web/pgadmin/utils/driver/psycopg2/__init__.py | 4 +-
web/pgadmin/utils/preferences.py | 528 +++++++++++++++++++++
web/setup.py | 60 ++-
22 files changed, 1550 insertions(+), 185 deletions(-)