If there are no jobs in the database yet, show a "get the addon" call to
action. This includes the current API URL, which can be copied by clicking
on it.
There is no feedback yet that the copy took place, though.
Copy-paste of TasksTable `recalcTableHeight`.
Even though the function does not work well 100%, it's better than not
having the table resize.
When the issue gets fixed, it should be copied over to TasksTable and WorkersTable.
When data is updated, resize columns in the job/task/worker tables. For
example, status change requests of Workers require more space, for example
going from `awake` to `awake → offline`.
Having only the status dot was hard to read. It requires you to learn &
remember the different colours, or to mouse-over and wait to see the
tooltip. For accessibility, we shouldn't be using just the colour to
convey information in the interface.
