pgAdmin 4 commit: Some doc restructuring and cleanup.

Some doc restructuring and cleanup.

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=64ee23a08889a06154aa31dd9e8c2a204e581237

Modified Files
--------------
docs/en_US/browser.rst                             |   2 +-
docs/en_US/debugger.rst                            |   2 +-
docs/en_US/deployment.rst                          |   6 ++--
docs/en_US/getting_started.rst                     |  31 ++++++++++-----------
.../images/{add_pgadmin_user.png => add_user.png}  | Bin
docs/en_US/images/{pgadmin_login.png => login.png} | Bin
...pgadmin_login_recover.png => login_recover.png} | Bin
.../images/{pgadmin_toolbar.png => toolbar.png}    | Bin
docs/en_US/images/{pgadmin_user.png => user.png}   | Bin
.../images/{pgadmin_welcome.png => welcome.png}    | Bin
docs/en_US/index.rst                               |   2 +-
docs/en_US/{pgadmin_login.rst => login.rst}        |  16 +++++------
docs/en_US/{pgadmin_menu_bar.rst => menu_bar.rst}  |   8 +++---
...admin_tabbed_browser.rst => tabbed_browser.rst} |   8 +++---
docs/en_US/{pgadmin_toolbar.rst => toolbar.rst}    |  10 +++----
.../{pgadmin_tree_control.rst => tree_control.rst} |   4 +--
.../{pgadmin_user.rst => user_management.rst}      |   6 ++--
17 files changed, 47 insertions(+), 48 deletions(-)