BK-513 Increase Booktype version to 1.5.5
BK-514 Escape strings while formatting messages in JavaScript code for the editor
BK-515 Do not escape strings in the notes tab
Improved Italian translation for Booktype Control Centre
Improved Italian translation for booki component
BK-516 Disable Lulu interface in the configuration
BK-517 Fix argument for pip in the installation documentation
BK-518 Install Italian translation for custom Booktype TinyMCE plugins
BK-519 TinyMCE should switch to Italian interface if user selected Italian interface
BK-520 Add Italian language to the list of languages
Merge branch 'master' into devel