iOS UX Update

done for [AGPUSH-777](https://issues.jboss.org/browse/AGPUSH-777)

@andresgalante @corinnekrych mind to give it a spin?

![registering](http://cl.ly/image/1C47343g0s0X/0.PNG) ![empty-placeholder](http://cl.ly/image/3d372d2P1I3z/1.PNG) ![notifications](http://cl.ly/image/0I0Q1n1n0p2X/2.PNG)