* fix apple-touch-icon, regenerate images
Fixed semi-transparent pixels of apple-touch-icon.png.
I had to manually exclude public/img/loading.png from the commit because
it's an APNG and one of the tools destroys the animation.
* exclude loading.png
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
* migrate gplus to google oauth2 provider. this still provides support for old gplus connections.
* Update models/oauth2.go
Co-Authored-By: Antoine GIRARD <sapk@users.noreply.github.com>
* make vendor