Option to "Select all" from all pages in table, not just current page

## What?
In a Graylog paginated entity tables, currently users can "Select All" from a checkbox, which will select all items on the current page, If users wish to add additional entries from other pages, they need to go to each page individually and select from there. It would be nice if we gave an option for users to "select everything" so they don't need to flip pages.

Implement a "Gmail-like" capability where after selecting everything on one page, an option appears to then select everything:

## Why?

Users may wish to run bulk actions quickly in this manner, and this saves a lot of clicks (i.e., user filters a table, then can quickly close errant alerts, etc.)