Prevent haskell/grains test from missing overflow condition.

Set types of the values in to Integer with will remove automatic
infering to lower type and thus overflow in both tests and program.
Merge pull request #1323 from qnikst/master

Prevent haskell/grains test from missing overflow condition.
Add 'please log in' placeholder page (v1.0)
Correct case on GitHub
Fix status on 'please log in' page
Hook up proper redirect in 'please log in'
Move v1.0 nav helper
Add profile page placeholder
Add placeholders for v1.0 exercises and solutions
Add placeholder page for team
Hack the logged in layout (v1.0)
Ditch double-formatting in v1.0 menu