Checkmk Werk 14493: Add global setting "Enable community translations"

ID: 14493 Title: Add global setting "Enable community translations" Component: Multisite Level: 1 Class: New feature Version: 2.2.0i1 <ul> <li>Defaults to False - per default only English and German are shown in the language dropdown (User > Edit profile > Language)</li> <li>Changing this global setting requires an additional activation of pending changes</li> <li>When changed from True to False, the UI default and user specific languages are checked and set to English if a community translation was in place. Any such reset to English is logged as a warning to the details column on the "Activate pending changes" page.</li> <li>When updating from an older version without this global setting, the UI default and user specific languages are checked and if a community translation was in place this global setting is changed to True to keep the previous language configuration.</li> </ul>