Refresh database content entities

[atanaspuskulev]

Is your feature request related to a problem? Please describe.
Displaying content (entities) of a database is not refreshed in the panel view when expand/collapse the database in the list. You have to use the refresh button next to the connection name to refresh the content. This happens when importing/working outside the Antares app (e.g. in terminal [import backup]).

Describe the solution you'd like
Collapsing/expanding database content in the panel via the arrows, should refresh the content of this database.

Describe alternatives you've considered
Would be nice if there's an option to each table (entity) to have a row counter (and or option) or size display in KB, MB, etc.

Additional context
N/A

[bart-schaefer]

Refreshing the list of tables may also be very time-consuming for a large database.