SVG Clean Up

* Remove unnecessary svg groups
* Remove unnecessary viewbox
* Remove unused small Soulmates logo
* Remove the old Soulmates logo
* Optimise guardian logos
* Optimise loading gif
* Optimise Soulmates logo
* Optimise JCB card icon
* Optimise powered by ee icon
* Optimise stars sprite
* Optimise twitter bird icon

/cc @austinh7 

![ ](http://media1.giphy.com/media/eMzJNneeWjqyk/giphy.gif)