Don't barf if the SQLite DB is missing

Dependencies

• [2] TJK27WSB Open the DB using Hydra::Model::DB->new
• [3] J5UVLXOK * Start of a basic Catalyst web interface.

Change contents

• replacement in src/lib/Hydra/Model/DB.pm at line 16
  [2.529]→[2.529:596](∅→∅)
  − die "The Hydra database ($path) not exist!\n" unless -f $path;
  [2.529]

  [2.596]
  + #warn "The Hydra database ($path) does not exist!\n" unless -f $path;