Glyphic: Immersive RP Languages

## [0.6.1]
- **Fixed: a Lua error when quest text worked out who was talking to you.** On
  Midnight the client hands an addon some unit text as a "secret" value, which
  looks like ordinary text right up until it is read, and the tooltip of
  whoever was standing in front of you is the likeliest place for one. Reading
  the NPC's reputation faction threw `attempt to index field '?' (a secret
  string value)` on those units -- so the quest you were being offered stayed
  in plain English, and you got an error window for it. Their race and their
  side are screened the same way now, as is `/glyphic quests`, which was
  reading all three to tell you why a troll was speaking Orcish.
- **Fixed: Glyphic no longer builds a hidden tooltip on modern clients.** It
  was the fallback for reading a unit's faction on clients with no tooltip
  data API, which is the Classic flavours and nothing else. Setting a unit on
  a tooltip runs Blizzard's own tooltip code, and running that from an addon's
  own execution is what produces `bad argument #1 to 'UnitPlayerControlled'`
  inside `GameTooltip_UnitColor` -- an error with no Glyphic file anywhere in
  it, which is the kind nobody can trace. Retail and Forever answer the same
  question as data, so there was nothing to fall back for.