Revert to old renaming

Rename.vim doesn’t appear to be compatible with moving a file around
outside of its original folder. Worth the extra weight of this code to
be able to switch a file’s folder if needed.
Fix so that C-arrow mappings work in Tmux/Vim.

After using Tmux, found that my <C-up> and <C-down> mappings to move
code around (useful in visual mode for moving a block around, taken
from Drew Neil’s Vim Masterclass) were not working in Tmux. Tracked the
problem down to a conflict between using the screen-256color and
xterm-256color terminal types.

Summary: you need to use screen-256color or else all sorts of visual
issues happen that make the terminal hideous, but that means that arrow
keys aren’t mapped properly. Xterm has the opposite set of
circumstances.

Looked into a number of options. Overriding the Thoughtbot
default-terminal option in Tmux resulted in a background update issue.
Also not wild about overriding defaults due to the pain in the ass if
upstream makes changes in the future.
http://stackoverflow.com/questions/10158508/lose-vim-colorscheme-in-tmux
-mode

These mappings solve the problem:
http://stackoverflow.com/questions/15445481/mapping-arrow-keys-when-runn
ing-tmux
Move git log formatting into gitconfig from alias.

Easier to read and better organized.
Timeout code from Mislav

Trying these settings instead.