On init Git Remote Settings page, do not pre-fill remote name "origin"

When user enters the URL and remote name is empty, pre-fill remote name "origin"

(Fixes issue #1918)

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Add the balloon hint for pre-fill remote origin

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Merge branch 'prefill-origin'