Add missing param tag.
Add insert/delete/update to ORM\Query

Use the repository object reference to get the table name, removing the
need for additional parameters.
Update Query usage in Table class.

The insert/delete/update methods no longer need table parameters, so
remove them where possible.

Refs #2550
Rename test class to match the file name.
Clear cache between test methods.

Leaving the cache data around between tests causes failures between
runs.
Add Query::into()

Because of how identifier quoting works, the insert() method cannot be
overloaded as the table argument gets set by the identifier quoter. I'd
rather have additional infrequently used method vs. additional type
checks that add cruftyness.
Merge pull request #2566 from cakephp/3.0-orm-query-easier-api

3.0 Easier methods for ORM\Query