theme: use git cmd from vcs_info zstyle
theme: make use of $_git_cmd
minor: remove doc (fixed)
theme: git: improve ahead/behind check (via prezto's git-info)
theme: check for KONSOLE_PROFILE_NAME in is_gnome_terminal
theme: handle exported GIT_DIR
theme: handle Konsole in 'Vim mode indicator'
theme: my-set-cursor-shape: support Konsole, compdef, info