Updated score PGN with DBI init outside loop, and better placement of query->finish
Major update with refactoring of DB connects etc.

parse and score have had db connect refactored. Also parse has had rewrite of choosePGN function.

Large tidy up of supplementary files:
INIT_* now install docker and download relevant images

run-* have been tidied and made single purpose for convenience.
Deleted onld DEPLOY script as it was deprecated.

Minor edits to db.chess.analysis that I forgot to add to last commit.
Updated INIT_HEAD with option to reset DB

Updated README with file descriptions.

build scripts are now executable.