Refector: clean up code.
Display note count on network graph.
Fix RoutingError when changing username to non ascii char.
New issue button was not follows to external tracker if it is selected. fixed #3386
Fixed UsersProject.in_projects

I discovered while trying to use UserTeam#remove_member() that
UsersProject.in_projects was broken.  So I wrote test cases to test what
I was trying to do and fixed the underlying problem.
Settings replaced by Gitlab.config
Link to accepting issues on feedback forum.
fix typo: shure -> sure
Changed the word 'authentification' to 'authentication'
add watchers to email recipients list. Add emails for close/merge MR
Add close issue/mr methods to Notify. Refactored Notificationservice
Improve notification service tests
add text templates to new emails
Fixed new mr/issue emails
Fix notify specs. Fix merge request close via api
rebuild notification on notes logic
inslude author & assignee to note notification recipients
remove notify checkboxes from note forms
Fix Note notification for entities without assignee
refactor wall.js. style wall page a bit