Merge branch 'develop'

frappe/__version__.py

frappe/desk/form/assign_to.py

frappe/desk/page/applications/applications.py

frappe/desk/page/messages/messages.js

frappe/email/doctype/email_account/email_account.py

frappe/hooks.py

frappe/model/naming.py

frappe/public/css/docs.css

frappe/public/js/frappe/form/footer/timeline.js

frappe/public/js/frappe/ui/tree.js

frappe/public/js/frappe/views/reports/grid_report.js

frappe/public/js/frappe/views/reports/query_report.js

frappe/public/js/frappe/views/reports/reportview.js

frappe/public/less/docs.less

frappe/translations/ar.csv

frappe/translations/bg.csv

frappe/translations/bn.csv

frappe/translations/bs.csv

frappe/translations/ca.csv

frappe/translations/cs.csv