dont call beforeFwRestart method if module is not enabled
using dilentRoot in _checkChains to avoid littet the log

Conflicts:
	main/captiveportal/src/EBox/CaptiveDaemon.pm
beforeFwRestart dont does nothing in the first enable

Conflicts:
	main/captiveportal/src/EBox/CaptivePortal.pm
remove blank line
updated changelogs
updated changelogs
Typo fix
Merge pull request #1318 from Zentyal/jag/captiveportal-startup-fix-3.2

3.2 Captive portal fixes related with startup