pgAdmin 4 commit: Fixed few bugs and changed the node create/edit view

Fixed few bugs and changed the node create/edit view to use the dialog
(tabbed) UI.

Also, fixed few bugs pointed by Dave:
* Open the URL in separate browser tab/window.
* Fixed few CSS changes for look and feel for the dialog view
* Some of the panels were not listed in the context menu for the
wcDocker.

Branch
------
master

Details
-------
http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=798398dba5f30e77730f2756a07c44df9103fbf7

Modified Files
--------------
web/pgadmin/browser/static/js/frame.js | 4 ++--
web/pgadmin/browser/static/js/panel.js | 2 +-
.../browser/templates/browser/js/browser.js | 20 ++++++++++----------
web/pgadmin/browser/templates/browser/js/node.js | 6 +++---
web/pgadmin/help/__init__.py | 6 +++---
web/pgadmin/static/css/overrides.css | 20 ++++++++++++++++++--
web/pgadmin/static/css/wcDocker/Themes/pgadmin.css | 20 ++++++++++++--------
7 files changed, 49 insertions(+), 29 deletions(-)