Merge branch 'use-separate-token-for-incoming-email' into 'master'

app/assets/javascripts/issuable.js.es6

app/assets/stylesheets/pages/profile.scss

app/controllers/profiles_controller.rb

app/controllers/projects_controller.rb

app/helpers/accounts_helper.rb

app/models/concerns/token_authenticatable.rb

app/models/project.rb

app/models/user.rb

app/views/profiles/accounts/show.html.haml

app/views/projects/issues/_issue_by_email.html.haml

...logs/unreleased/use-separate-token-for-incoming-email.yml

config/routes/profile.rb

config/routes/project.rb

...grate/20160819232256_add_incoming_email_token_to_users.rb

db/schema.rb

features/profile/profile.feature

features/steps/profile/profile.rb

lib/gitlab/email/handler.rb

lib/gitlab/email/handler/create_issue_handler.rb

lib/gitlab/incoming_email.rb