templates: Show better title for 404 page
Closes: #2293 (closed).
When running in develop mode, the title already contains 'Page not found'. Commit 0881dae6 already ensured that functional tests see this page title and treat it as 404 page. This change ensures that 404 is detected even when not running in develop mode.
Tests:
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Run freedombox as 'sudo --user=plinth ./run' without the --develop option. Install and disable JSXC. Visit the page /plinth/apps/jsxc/jsxc/. Notice that the page title is 'Page not found - FreedomBox'.
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Functional tests for JSXC work even when service is running without --develop option.
Signed-off-by: Sunil Mohan Adapa sunil@medhas.org
Closes #404 (closed)