* Fix various doc, user-facing, and source comment typos Found via `codespell -q 3 -S ./options/locale,./vendor -L ba,pullrequest,pullrequests,readby`
* refactor routers directory * move func used for web and api to common * make corsHandler a function to prohibit side efects * rm unused func Co-authored-by: 6543 <6543@obermui.de>