Merge pull request #71 from corentin59/wuic-0.4.0-snapshot

Regex support fixed for AWS S3 Storage
Polling sample with necessary enhancements on WUIC.
Polling sample with WUIC enhancements.
Merge branch 'wuic-0.4.0-snapshot' of https://github.com/gdrouet/wuic into wuic-0.4.0-snapshot
Wording : group becomes heap
Fix issue : must keep nut order so we use a LinkedHash[Set/Map] instead of Hash[Set/Map]
Possible to define many sprite provider for an image
Exclude memory map when using ehcache
Improves the way we can skip the use of an engine of a particular type in request's scope
Cache engine based on an in-memory map has now a timeToLive property
Adds polling sample
Migrate to 0.4.0.RC2
0.4.0.RC3 : fixes TLD structure which failed on JBoss 7
Releases 0.4.0
Start working on 0.4.1
Fixes #66 & # 64
StaticEngine for #62
Implementation for S3 polling (warning not stable)
#62
#75 and upgrade samples