mod_tokenauth: Periodically clear out expired tokens and grants This should ensure expired grants eventually disappear.

mod_tokenauth: Delete grants without tokens after period Generally it is expected that a grant would have at least one token as long as the grant is in active use. Refresh tokens issued by mod_http_oauth2 have a lifetime of one week by default, so the idea here is that if that refresh token expired and another week goes by without the grant being used, then the whole grant can be removed.

mod_tokenauth: Clear expired tokens on grant retrieval

mod_tokenauth: Delete grants in the wrong formats on retrieval

lint: Teach luacheck about module:once Silence warning for using this introduced in 9c62ffbdf2ae

mod_cron: Remove unused import [luacheck] Use of datetime was removed in 6ac5ad578565

Merge 0.12->trunk

mod_muc_mam: Improve wording of enable setting Suggested by jstein in the chat This option label is used by XMPP clients to explain what the option does. a) The user should know where the data is archived. b) The user needs a statement that can be enabled/disabled by the variable. A question would have the wrong logic here.

mod_http_file_share: Retrieve stored total in async-friendly way Does this run in a thread?

mod_cron: Load last task run time inside task runner to fix async This ensures that all interactions with storage happen inside an async thread, allowing async waiting to be performed in storage drivers.