fix(VProgressCircular): add vertical alignment (#4339)
fix(VProgressCircular): add vertical alignment (#4339)

Added the vertical alignment : middle property to the icon so that it will align itself properly. 
fixes #4285.
Credits : @jacekkarczmarczyk
Source of inspiration: https://codepen.io/anon/pen/ERvjEE
Phlow2001/vuetify,vuetifyjs/vuetify,Webifi/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,Webifi/vuetify,Phlow2001/vuetify,Webifi/vuetify,Phlow2001/vuetify,Phlow2001/vuetify