Switch to SMuFL and Bravura version 0.7
Updated SymId enum (sym.h) and Sym::synNames/symUserNames to SMuFL 0.7:
- all SMuFL 0.7 entities (as names or symbol id) are listed
- a few (15 in all) additional symbols are added to the end for
   - SMuFL stylistic alternates MuseScore needs to access directly
   - precomposed ornaments, SMuFL provides as sequences of glyphs
   - glyphs SMuFL does not provides (yet?), but has been used as symbols

Updated mscore/glyphnames.json to match the above

Updated code points which were using SymId which have changed from SMuFL 0.6 to 0.7

Fixed note heads palette.

Note: The Dynamics palette is broken, as it accesses the mscore glyphs directly, but the palettes use Bravura. The usage of HTML texts in this palette is unclear: please advise.
merge bravura update