layout.tt: support a title with HTML in it

Dependencies

• [2] GMD762QF Slight layout tweak
• [3] KSBB33RE Add a dashboard
• [4] Z6FOXDEC Use more flash messages
• [5] GTXYNFUK Merge branch 'master' into persona
• [*] J5UVLXOK * Start of a basic Catalyst web interface.

Change contents

• replacement in src/root/layout.tt at line 84
  [3.317]→[2.0:92](∅→∅)
  − [% IF c.user_exists && starUri; INCLUDE makeStar; " "; END; HTML.escape(title) %]
  [3.317]

  [3.318]
  + [% IF c.user_exists && starUri; INCLUDE makeStar; " "; END %]

  + [% IF titleHTML != ""; titleHTML; ELSE; HTML.escape(title); END %]