1. Update `stylelint` dependencies
- As of stylelint v15, we do not need `stylelint-config-prettier`
anymore:
https://github.com/prettier/stylelint-config-prettier/releases/tag/v9.0.5
2. Switch to `stylelint-config-standard`:
`stylelint-prettier/recommended` has not been updated for a long time
and still needs the old `stylelint-config-prettier`
3. Handle new `stylelint` issues
This is a fix for issue 933 which restores the original alligment of the analog clock; the analog clock still does not properly align to the left of the left sidebar when content of other left sidebar modules is too wide.
In reference to issue #927. Made changes to clock.js and clock_styles.css to prevent aligment problem when displaying analog clock and large calendar entries
