ENH: Add Show Source, Show on GitHub, Edit on GitHub Sphinx sidebar links

edit_on_github modifications: https://gist.github.com/westurner/d89c1ea1af05c5c514f9
BLD,TST: Add meta tasks
ENH: add dotfiles_status call to 'we' command, Linux & OSX ps aliases
BUG: __DOTFILES=${__DOTFILES:-"$HOME/.dotfiles"
DOC: usrlog.sh
CLN: -> detect_platform()
ENH: Add scripts/x-www-browser
BLD: add tox -e make
DOC: setup.py
DOC,BLD: remove github-tools
ENH,CLN: Man (manv, mang, mane) // Less (lessv, lessg, lesse)
DOC: Add docs to 00-bashrc.before.sh
CLN: etc/bash/29-bashrc.vimpagers.sh
ENH: $_USRLOG: note(), usrlogv, usrlogg, usrloge
DOC,CLN: workon_pyramid_app
DOC: etc/bash/04-bashrc.TERM.sh
DOC: etc/bash/00-bashrc.before.sh
BLD,BUG,DOC: md5sums -> md5 on OSX, docstrings
DOC: generated scripts/bashrc.load.sh and docs/bash_conf.rst with 'make help_bash help_bash_rst'
DOC: ENH scripts/dotfiles-bash.sh comment regex