Year filters and database constrance

@tilius 
i accidently close previous PR, and i do not know how to reopen it

>Entered /lists/authors and selected test2 as Journal. Then tried to input 2013 - got "please choose value GREATER then 2014". Tried in turn to input 2015 - got "please choose value LESS then 2014" ;) Could you fix it? Maybe we'd better resign from the front-end year validation in the filters at all?

Are you sure about this messages? Is it exact text? 
Why did you throw this file away? See /foo or any undefined route - replies with "Action not found"