epriestley bfe7cdc5a2 Provide default image alt text in more contexts and support custom alt text ... Summary: Ref T13629. - Allow files to have custom alt text. - If a file doesn't have alt text, try to generate a plausible default alt text with the information we have. Test Plan: - Viewed image files in DocumentEngine diffs, files, `{Fxxx}` embeds, and lightboxes. - Saw default alt text in all cases, or custom alt text if provided. - Set, modified, and removed file alt text. Viewed timeline and feed. - Pulled alt text with "conduit.search". Maniphest Tasks: T13629 Differential Revision: https://secure.phabricator.com/D21596		2021-03-04 16:51:23 -08:00
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audio/basic	Add a few more sounds	2017-04-19 13:47:23 -07:00
css	Provide a more structured result log for Herald conditions	2021-02-19 11:16:21 -08:00
externals	Fix double-close on dialogs leading to Javascript console error	2019-07-03 12:38:49 -07:00
favicons	Dynamically composite favicons from customizable sources	2018-03-12 15:28:41 -07:00
image	Render indent depth changes more clearly	2019-02-19 12:40:05 -08:00
js	Provide default image alt text in more contexts and support custom alt text	2021-03-04 16:51:23 -08:00