Installation confirmation - use named buttons (not Yes, No)

[mklhmnn]

Is your feature request related to a problem? Please describe.
After having selected everything, a dialog "Antergos Installer - Confirmation" pops up and asks "Device /dev/sda will be fully erased! Are you REALLY sure?". Same applies to the later "Are you REALLY sure you want to continue?"

Describe the solution you'd like
There should not be buttons "Yes" and "No", but rather "Erase /dev/sda" and "Abort" or "Cancel". Reason: it is easy to grasp without the need to read the text.