Merge pull request #31 from msouth/features/use_uri_for

puts uri_for() around _construct_url() calls that go to browsers
hooks for pre_save and post_save; more data passed to hooks

This adds hooks called add_edit_row_pre_save and add_edit_row_post_save.

The pre_save hook is meant to replace the previous add_edit_row hook,
which the documentation in this commit deprecates.  The code for the
'deprecated' hook is not changed at all and doesn't necessarily ever
have to.

The hooks get a lot more data, so they can tell what table_name was
passed to the handler originally, and on post_save there is a
reference to the database handle so they can get last_insert_id
if they need it.
Rename default_field_values to values_from_database.

A little clearer this way I thik.
Wrapping.
Merge branch 'msouth_release' of github.com:msouth/Dancer-Plugin-SimpleCRUD into msouth_release

rebased from upstream before pulling this....I have no idea what this is going to look like :)