Merge branch 'release-2.3.2' into develop
Updated Polish translation
Merge pull request #31 from ittw/develop

Updated Polish translation
Adds Serbo-Croatian translation
Renames lib to src
Disables X-XSS-Protection on the admin screen
Bumps version number
Bumps tested up to
Updates changelog
Merge branch 'release-2.3.3'
Adds translations
Merge branch 'release-2.3.3'