Backspace 1.1.2

Backspace 1.1.2

Fixes the "Register" and "Log In" links on the login and registration pages,
which did nothing since 1.1.0. Two smaller changes ride along. All three
were contributed by @st7105.

What changed

The auth navigation links work again (#124)

The 1.1.0 localization moved the login and registration prompts into
translation catalogs, and the placeholder for the link inside them was named
link. The library that renders those strings treats a lowercase link as
an HTML void element, so the link was rendered empty and the component never
mounted. The placeholder is now actionLink, and the localization
consistency check rejects void-element names in every catalog so this cannot
come back.

Activity elapsed time is localized (#122)

The "elapsed" line under a rich activity now comes from the catalogs in all
three languages instead of a hard-coded English string.

Edit your last message with the up arrow (#123)

With an empty composer, pressing the up arrow opens your most recent message
in the channel for editing. Pending messages, system messages and messages
without text are skipped.

Updating

The fix lives in the web client the instance serves, so updating the
instance is what matters. Desktop installers are rebuilt with the new version
number and pick the fix up from the instance.