Implement PJs/ Provide JS validation functionality

[ericecook]

https://github.com/jabapyth/PJs

[icook]

Admittedly I was hoping to use this to just convert all our built-ins on the fly... Maybe just a pipe dream tho.

[ericecook]

I updated it.

Ideally we'd want it setup to be able to specify specific JS validators and Server side validators to not necessarily run together. So for that we'll definitely need a more robust system of specifying which validators to use, but I see that is already setup as an issue. Another thought is that we may want to be able to specify different validators to run on different js events, but that's overkill for now at least

[icook]

Definitely this granularity would be awesome. Not sure it would be worth implementing for just our uses tho, the repo would need to get a bit popular before I would wanna re-factor that much.