This attribute is completely unused.
Most ui variables were using std::unique_ptr, but not all. Went through all of the UI code to find where they were manually deleted.
Allows the ability for users to add custom browser widget docks that they can use for their third party services if they feel the need, mostly as a convenience tool so they don't have to open extra browsers alongside the program.
tytan652
cg2121
Matt Gajownik
jp9000