When a volunteers accesses the image picker only show the images uploaded by this volunteer
Comment out profile images in view
Comment out editing project images and showing project locations
Merge remote-tracking branch 'josua/projects' into projects

Conflicts:
	vendor/extensions/projects/app/views/refinery/projects/projects/edit.html.erb
	vendor/extensions/projects/app/views/refinery/projects/projects/show.html.erb
Show volunteers and individual_tasks, requirements and material in project page again
Link user profiles again and fix redirection to own profile
Merge branches 'master' and 'projects' of https://github.com/matthias-g/stc-karlsruhe into projects
Repair location picker default values and project explorer map marker view.