Add Syntastic plugin
Revert "Add vim-sleuth plugin"

This reverts commit 54c790138401b64f1ae568fc199edeaeaba19892.
Add zenburn colour scheme
Remove not-very-helpful quicklist mappings
Switch from CommandT to CtrlP
Better session management
Don't automatically press <cr> when grepping

This gives me the opportunity to set the folders to search in
Mark the 80th column itself, not stuff after it
Use ambiwidth=single

This is better for greek letters and stars and things, which I use quite
a lot of at the moment.  Yet to see if it'll cause problems with
Japanese though...
Three spaces is better than four