Refactor EL and check on top of scalaz.Validation
Make RequestStatus a sealed trait instead of an Enumeration
As of Extractor.seqToOption, empty Seq is mapped to None
Create some groups in the ELParserSpec
Expressions can be malformed
Useless call to Java pattern
String.isEmpty is the way to do this test
Re-introduce old deprecated Session methods
Add missing implicit
Bump Scalaz 7.0.0-M6
merge with @slandelle last changes
Merge pull request #859 from nremond/session-refactoring

Basic detection of malformed Expressions
Minor clean up
No need for particular exception handling, this is handled by Action
Clean up exception handling
Minor clean up
Upgrade AHC 1.7.9, close #877
Add new committers
Honor useRawUrl in request logging
Fix typo in useRawUrl attribute name