Add option to disable status notification

[Mezzle]

For certain git repositories, this slows down usage
of the shell horifically.

This option can be set with

git config --add oh-my-zsh.hide-status 1

which will disable checking/showing the status notification

[fedot]

It would be nice to control this on per-repository level.

Currently I'm overriding parse_git_dirty in my ~/.zshrc to disable it for specific user or calling parse_git_dirty(){} in CLI to disable it temporary.

[Mezzle]

fedot, this does allow it to be done on a per-repository level, as it's git config rather than git config --global

[fedot]

@Mezzle kudos!

I understand that your patch does allow it to be configured on per-repository level, and I personally think this make a great addition. ;)

Just wanted to provide quick and dirty way of doing this until this merged for people who don't want to apply it manually.

[devkmsg]

+1 on this patch.

I have a repo with more than 10000 files, I end up waiting 5-15 secs. each time I hit the enter key. With this patch that is gone!

[hghazal]

+1 to merge this in.

[mishudark]

+1 to this patch

[stackng]

+1 to merge this in.

[jfmercer]

+1 to merge.

[tksohishi]

+1 to merge

[mfournierca]

This is fantastic, thanks a lot.