Keep track of the database schema version

The singleton table SchemaVersion contains the current version
of the Hydra database schema.  This can be used to upgrade the
schema on the fly.

Also reran the DBIx::Class schema loader.

src/lib/Hydra/Schema.pm

@@ -1,3 +1,4 @@
+use utf8;
 package Hydra::Schema;
 
 # Created by DBIx::Class::Schema::Loader
@@ -11,8 +12,8 @@ use base 'DBIx::Class::Schema';
 __PACKAGE__->load_classes;
 
 
-# Created by DBIx::Class::Schema::Loader v0.04999_09 @ 2009-11-17 16:04:13
-# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:Y97NEH6tnsRjsy0/nVgMjQ
+# Created by DBIx::Class::Schema::Loader v0.07014 @ 2011-12-05 14:08:56
+# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:BpPjKT5Pb1RYMHo+oKdZ+w
 
 
 # You can replace this text with custom content, and it will be preserved on regeneration