Typo 5.0.2 bugfix release

After releasing Typo 5.0, we’ve discovered a critical bug making Typo deleting itself when clearing the cache. This is now fixed, and we’re happy to announce the release of Typo 5.0.2. Typo 5.0.2 is mostly a bugfix release with some admin improvements. It also fixes a Rails bug on update_all making Typo unable to save sidebars config under pgsl and sqlite.