mod_rest: Add an example bash script for using mod_rest Also supports --login with mod_http_oauth2

mod_http_oauth2: Update to use new API of Prosody mod_tokenauth @ 601d9a375b86

mod_http_oauth2: Add support for refresh tokens

mod_http_oauth2: Declare additional client registration fields as strings Previously any property not listed in the schema was allowed in any form, which is probably a bit too liberal. Instead, limit extra fields to simple strings, which should still allow localized versions of the various URIs and descriptive properties per RFC 7591 §2.2

mod_http_oauth2: Stricten check of urlencoded form data Because type(formdecode("string without equals sign")) == "string", so best avoid continuing in that case, even if strings mostly behave as tables as long as you don't hit one of the __index methods.

mod_http_oauth2: Pedantic optimization Checking the length of the string seems like 30% more expensive than comparing it with the empty string (by reference, probably).

mod_pubsub_feeds: Fix packaging of support library for installer

mod_muc_rtbl: Handle node purge Prevents the module from going out of sync with the node in case this event ever happens.

mod_http_oauth2: Fix traceback on missing 'scope' parameter parse_scopes() takes a string and it is not optional

mod_http_oauth2: Focus username field automatically Reduces effort, not having to click or tab to focus the username field. Should have no negative effects since there's no other elements one might want to focus.