Option to not remember window position and geometry

[prg318]

Is your feature request related to a problem? Please describe.
It would be great if qtpass had an option to not store window position and geometry. Users may prefer to have their window manager place the window so it can placed on the active monitor.

Describe the solution you'd like
A checkbox in the preferences could be added (enabled by default) to "Remember window position" so that users can disable this if they want their Window Manager to manage the window position.

Describe alternatives you've considered
Using a script to remove the window position information before qtpass is run, but it would be a lot cleaner to have an option in qtpass