update zsh, X, gpg config; add ssh config, gpg bin

significant changes:
 - gpg socket and ssh agents are now automatically forwarded
 - big zsh refactor with better gpg and ssh agent support, and better keybinds

Xresources:
 - fix Xft

gitconfig:
 - set default branch to master

xinitrc:
 - remove outdated code to source site local/system scripts, that should
   not be our problem
 - load xrdb/xmodmap sooner
 - fix gnu find opt ordering
 - move ssh-agent to zsh startup
 - suppress test urxvtc output

zsh:
 - move PATH, FPATH, LANG, XDG, ~/tmp to zshenv
 - shim /etc/zprofile changing path in .zprofile
 - move .zshrc contents to .zprofile
 - replace magic functions with add-zsh-hook and add-zle-hook-widget
 - automate bindkey with zkbd and terminfo

bin:
 - add gpg-learn-keys for scd
 - fix pinentry

gpg:
 - disable throw-keyids, this breaks other stuff

install.sh:
 - do not run .zprofile
 - add .ssh folder support

ssh:
 - add config