Fixes #22 - Prefix the filename with '/' to be able to make an exact match

Otherwise assets with the same name but prefixed are taken into account
Fixes #26 - Implements a simpler AssetPathCollector for JBoss VFS without JBoss dependencies
Merge pull request #23 from martin-g/22-use-the-exact-asset-for-version

Fixes #22 - Prefix the filename with '/' to be able to make an exact mat...
Merge pull request #27 from martin-g/26-drop-vfs-dependency

Fixes #26 - Implements a simpler AssetPathCollector for JBoss VFS withou...
Merge branch 'master' into wicket7