8d2c24f7f9
* add migration and basic UI for changing a user's theme * update user themem * use right text on button * load theme based on users' selection * load theme based on users' selection in pwa too * update sample config * delete older theme loading * implement AfterLoad to set users' theme properly * set up default theme when creating a user. This uses the installation wide theme * use flash messages for error * set default theme when creating a user from the cli * fix @lunny review