Fixed: Releases are not sorted correctly (iMSCP::LsbRelease library)
Fixed: Unable to switch to other SQL server in one pass...
Fixed: Local DNS resolver entry are not removed when switching to external DNS server
CS fixes
Merge branch '1.1.x' into stable

Conflicts:
	CHANGELOG
	docs/Debian/packages-jessie.xml
	docs/Ubuntu/packages-lucid.xml
	docs/Ubuntu/packages-trusty.xml
	engine/PerlLib/iMSCP/LsbRelease.pm
	engine/setup/imscp-setup-methods.pl
Small fixes (distro packages)