Blacklight 3.4.2 released

[Chris Beer]

I've cherry-picked some changes from Blacklight master into the Blacklight 3.4.2 release:

- Generate root route FIRST in local app routes.rb

- improved order of generated routes

- fix #413, stop trying to outdo rails routing id escaping

- fix render_*_field_values with provided fields not in the blacklight configuration

https://github.com/projectblacklight/blacklight/compare/v3.4.1…v3.4.2

Thanks,

Chris