Allow department leaders set themselves as operators
Added projects#set_complete action
Change non-complete operator link to hover popover in projects#index page
Seprated samples_receiver and report_sender, fixed abilities
Added salesman filling when projects created
Show edit_project_path link for marketing department and fix two notice bug
Fix projects#new bug with salesman-project association
For salesmen, no ability for others' projects
Merge branch 'projects' into dev
Merge branch 'dev' into homepage
Change header nav
Merge branch 'homepage' of github.com:yftang/bipc into homepage