Please describe the problem:
Gnome-terminal seems to have the zoom out key hardcoded.

Steps to reproduce:
1. Switch to a keyboard layout where minus is not located next to the
right shift key (i.e. dvorak). 
2. Press crtl-<key left of right shift> 

Actual results:
Terminal zooms out 


Expected results:
Terminal should not zoom out. 
This is very annoying on my dvorak layout because it makes it impossible
to pause programs with ctrl-z.

Does this happen every time?
yes

Other information:
If the terminal is at maximum zoom out, ctrl-z works as expected