mod_authtokens: Rename to mod_tokenauth for consistency with mod_saslauth

mod_authtokens: New module for managing auth tokens

util.adhoc: Allow passing dataforms in initial command This might not be quite legal per XEP-0050, but makes it possible to call simpler commands without keeping state across another roundtrip.

Merge 0.11->trunk

util.datamanager: Fix iterating over "users" (thanks marc0s) The 'store' path componend used to be unescaped until 756a2a00e7e7 added escaping to address issues with characters like '/' used in PEP, but with a special case for '_' which was already in common use in 'store' path components. Missed adding this escaping here.

net.dns: Handle being loaded outside of Prosody `if timer ...` suggests that this was intended, but it did not work because net.timer depends on net.server which refuses to be loaded outside of Prosody.

mod_admin_telnet: Allow passing list of hosts to http:list() Lets you select what hosts to list http services on. In particular, this enables listing global http services, which was not possible before.

mod_muc: add muc-private-message event This seems to be the one place handling MUC-PMs. This event is added so that plugins (such as muc_occupant_id) can edit them without having to redo the work.

util.jwt: Remove unused return value from tests [luacheck]

util.jwt: Basic JSON Web Token library supporting HS256 tokens