Revert "Setup autojump after setting up $PROMPT_COMMAND"

This reverts commit 7f11d58e3eeabe3969bbe84ba85ab7e2173e2f64.
Revert "Add autojump (http://github.com/joelthelion/autojump)"

This reverts commit f6d4986c8a5f8ad6ac085839e97f2bbbe2c4632f.
Change source github url to tkho
Use stock git-completion.bash
vi-style command line editing