Add Bootlint to build

# DO NOT MERGE

Adds https://github.com/twbs/bootlint checking for making sure Bootstrap conventions are followed

- [ ] Cleanup `col-*` markup
- [ ] Add to base grunt task and rebase
- [ ] Exclude server pages since they don't use the same setup right now
- [ ] Probably don't need to lint both min and unmin
Yeah, I think there are a few that should still be addressed, but I'll let you land this as-is and those changes can be dealt with separately