+- Theming:
+ - Move `user.css` to the `data` folder
+ - Move default template files to a subfolder (`default`)
+ - Rename the legacy theme to `vintage`
+ - Private only filter is now displayed as a search parameter
+ - Autocomplete: pre-select the first element
+ - Display daily date in the page title (browser title)
+ - Timezone lists are now passed as an array instead of raw HTML