Refactoring docs about environment
Changing text order to better details about priority
Portuguese text only
Better text in english
Fixing some typo
Adding info about getOrDefault method
Typo and docs about getOrDefault (portuguese)
Fixing typo
Adding properties highlight
Space to tabs
Merge pull request #824 from caelum/ot-gh818-refactorenvdocs

Refactoring docs about environment
Fixing problem with forward.
Merge pull request #828 from renanigt/fixingForward

Fixing problem with forward.
Updating version
Merge branch 'master' of github.com:caelum/vraptor4
Merging ServletEnvironment with DefaultEnvironment
Fixing charset
Adding verbose logs to get more info when error occurs
Adding constructor with EnvironmentType
Lazy load environment type