Removed the copy/paste code, moved it into a reusable function that can
be called from the `local_setup` function as needed. Also simplified the
handling of the $HOME variable since @rico-chet provided a better way of
doing this.
Git uses system-wide and user-wide configurations per default and these
can interfere with our tests. Keep `git` from using them by setting the
according environment variables.
This might also help with other tools which access user's home
directory.
Added completion for reload.
Fixed order in completion
Added unit tests for completion
The variable BASH_IT_AUTOMATIC_RELOAD_AFTER_CONFIG_CHANGE has to be unset.
