Checkmk Werk 10373: Fix distributed update issue related to missing theme directory

ID: 10373 Title: Fix distributed update issue related to missing theme directory Component: Multisite Level: 1 Class: Bug fix Version: 1.7.0i1 In a distributed environment, where the central site is based on 1.5 and a remote site has already been migrated to 1.6, the configuration synchronization to the 1.6 site could remove the local/share/check_mk/web/htdocs/themes directory which lead to the following error in the GUI: <tt>Internal error: [Errno 2] No such file or directory: '/omd/sites/stable/local/share/check_mk/web/htdocs/themes'</tt>. The GUI is now able to handle this situation without failing.