add cohorts to projects
order cohorts on index
add select on cards
project styles
project style finetuning
add logo to projects
remove opdrachtgever and show-action from projects
add project cohort cards route
cohort card views
update normal card views
Merge branch 'project_cohorts'

Conflicts:
	app/assets/stylesheets/styles.css.scss
	app/views/dashboard/cards/index.html.haml
	app/views/dashboard/projects/index.html.haml