clean camelCase usage in certdirectory.py
cleanup camelCase usage in util.py

s/ioctl_GWINSZ/ioctl_gwinsz
cleanup camelCase usage in gui/utils.py

s/interpolatedStr/interpolated_str
cleanup camelCase in gui/utils.py

s/errorWindow/show_error_window

Change to show_error_window to make it more obvious it is
a wrapper method, and not a poorly named widget class.
cleanup all cap single letter methods in lock.py

P()/V() are traditional names, so leave them as
aliases, but use wait()/signal() for the defs