fix placement to be from-big-to-small rulesShips
avoid further redirects
remove cookie-setup
avoid superfluous encryption/decryption cycles
consistent variable names
Clarify CleverAI a bit.
Add difficulty levels documentation to haddock.
Display outline of sunk ships. (part of #116)
Merge pull request #113 from jvoigtlaender/initships

fix placement to be from-big-to-small rulesShips
Merge pull request #114 from jvoigtlaender/requests

avoid further redirects
Merge pull request #115 from jvoigtlaender/no-cookies

remove cookie-setup
Re-add dependency `yesod-core`.

Otherwise it doesn't compile...
moved stateful urls from play.julius to play.hamlet (see #118)