Fix: Solve duplicate js and solve jmobile problem of cache.
Fix: Bad param used
Fix: syntax error
Fix: Bad field param
Fix: function to get localtax1 or 2 value from vat rate return bad value
when countries differs.

Conflicts:
	htdocs/langs/fr_CA/main.lang
Merge remote-tracking branch 'origin/3.4' into develop

Conflicts:
	htdocs/langs/fr_CA/main.lang
	htdocs/main.inc.php