pgAdmin 4 commit: Use the same layout mechanism used as in the panel us

Use the same layout mechanism used as in the panel using elementary
layout support in different dialogs. Fixes #1358.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=3350eaceabf7b80d7fa444147f9907cb61752e1e

Modified Files
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web/pgadmin/about/templates/about/about.js         |  10 +-
.../templates/tablespaces/js/tablespaces.js        | 116 +++++++++++----------
.../templates/preferences/preferences.js           |   9 +-
.../tools/backup/templates/backup/js/backup.js     |   8 +-
.../templates/grant_wizard/js/grant_wizard.js      |   5 +-
.../templates/import_export/js/import_export.js    |   4 +
.../templates/maintenance/js/maintenance.js        |  10 +-
.../tools/restore/templates/restore/js/restore.js  |   5 +-
.../user_management/js/user_management.js          |   3 +
9 files changed, 96 insertions(+), 74 deletions(-)