Merge pull request #255 from ceedubs/improve-minLength-error-msg

Improve minLength error message for String fields
remove options route for now
Update atmosphere to snapshot version, add war overlay plugin to example project
Fix route params in atmosphere routes
Fix routeparams in atmosphere routes
Fix redirecting from within a future
Fix scalate and async requests
Fix gzip output and scalate
fix reverse routing with params
Fix swagger reflection of Options and Lists with scala value types
include route params from within context
Fix route params inside async result
Don't do Some(null)
Add CommandExecutor (deprecates CommandHandler)

The CommandHandler is not type-safe, because providing a ModelCommand[S] to the execute method does not gurantee that a ModelValidation[S] will be returned.