use mobile UA header
solved merge conflict
solved merge conflict
use API more similar to the existing one for localization
Add template issue in checks of meta-viewport & doc-width

Conflicts:
	lib/checks/responsive/doc-width.js
Add dependencies in doc-width check
delete useless file
Add issue template in load-speed check
add issue template in flash detection check & some correction in load-speed check
adapt client script to use of issue template
merge