This is a temporary workaround. Adding the real raw photo is quite a
challange and touches multiple components nobody wants to touch right
now. As this change is blocking an actual hotfix, this is fine, and will
be properly fixed at a later time.
* introduce new presenters and extend the functionality of the BasePresenter
* add a handlebars template for the profile sidebar, render it everytime we need to update
* introduce a 'aspect_membership:update' global event