Enable 'quote_names' in dbic connection args

[osfameron]

This setting would allow us to join to the users table without generating invalid SQL like JOIN users user as user is a reserved word.

It's not possible to simply add this, as I discovered, because there is various literal SQL that isn't correctly escaped. Also quoting searches which should work has some oddities, e.g. https://gist.githubusercontent.com/osfameron/104bb2d98879bf0b8616/raw/61d08c7ccc9982f36fe8342369607fa49c9b3be4/gistfile1.txt

There are some individual workarounds scattered around code, e.g.:

• NOT joining users
• manually setting the quote_name before doing something, then trying to roll back

The first makes me sad, and the 2nd is overly tricky and according to #dbix-class may be hard to properly localise so risks subtle bugs. Worth spending a bit of time to test and refactor this properly.

[racke]

We have a related problem in interchange/TableEditor#64, so I also would be interested in a possible solution.