Fix MIME type for returning JSON (application/json)
Merge pull request #1310 from Zentyal/ejhernandez/fix-JSON-mime-type

Fix MIME type for returning JSON (application/json)
releasing core 3.4.3
dont call beforeFwRestart method if module is not enabled
using dilentRoot in _checkChains to avoid littet the log
beforeFwRestart dont does nothing in the first enable; fixed enableService to not let webadmin as changed
up changelog
Merge branch 'jag/captiveportal-enablefixes' into 3.4
Merge branch '3.4'

Conflicts:
	main/captiveportal/ChangeLog
	main/core/ChangeLog
	main/core/debian/changelog
	main/firewall/ChangeLog