HUE-2352 [oozie] Manage buttons on the single coordinator page stack up weirdly on smaller screens

Added margin
Added empty datasets message
HUE-2349 [sentry] New roles on 'roles' tab are not expanded when created

Fixed role status for the newly created ones
HUE-2350 [sentry] New privileges lose their DB and Table info

Forced update the valueAccessor value from the hiveAutocomplete
HUE-2351 [sentry] URI privileges can not be edited

Fixed filechooser binding
Fixed creation of KO privilege
HUE-2308 [oozie] Use new metric collection system

Prettified the metrics display
[sentry] Update role when trying to create one with existing name
[sentry] Hide create and delete role button when not a Sentry admin
[sentry] Prettify URI view
[sentry] Better role filtering
[sentry] Do not list privileges twice in bulk replace
HUE-2361 [sentry] Grant privilege to a role the user does not belong too

Do not check the checkall checkbox when creating the firt role
[sentry] Add a confirmation popup when Sentry deletes cascade privileges
[sentry] Disable group edition when not a Sentry admin
[useradmin] The user fetching API accepts text not jsonified data