fix(git): Update pager to explicitly start at beginning

For some environments (or `less` versions), the view start at the bottom
by default.

less 444 on Ubuntu 12.04.2 for example starts at the beginning, but the
current less on Amazon Linux does not.
fix(git): Update pager

- '+g' for some reason strips color codes in some situations, e.g. git
  log where only one page of content exists
- Add --no-init and -quit-if-one-screen