Update vim
Remove xls2csv bundle and fix remote url for time-flies-py
update gcalcli
Update matplotlibrc

* Change savefig dpi to 400
* Remove explicit matplotlib backend
octaverc: comment-out addpath for MATLAB directory that is not present
path: add python3 directory and homebrew/sbin for local computer
pythonrc: improvements
alias: no longer need explicit "pymol -M" alias
Update tmux-powerline and tssh bundles