*sh: update `p` alias

I generally want to run `refresh` more often than I want to run `pull`,
so swap the latter out for the former.

Signed-off-by: Wincent Colaiuta <win@wincent.com>
Vim: add usability improvements for `flow` messages

Don't hard-wrap the messages; instead, turn on soft-wrapping (ie.
display only) and set up some mappings to make editing on soft-wrapped
lines more or less pleasant.

Signed-off-by: Wincent Colaiuta <win@wincent.com>