[NetworkBearerSelection] Use new C++ wrapper in common/extension.h

ExtensionAdapater should be deperacated by common::Extension and
common::Instance.
Bump version to 0.65
[jslint] Enable js lint and fix the errors.
Merge pull request #330 from halton/jslint

[jslint] Enable js lint and fix the errors.
Bump version to 0.66
Merge pull request #324 from halton/network_refac

[NetworkBearerSelection] Use new C++ wrapper in common/extension.h
[Filesystem] Fix and complete the API

Fix: content virtual roots (Images, Documents, ...) must be in 
user's content directory.
Fix: callback id  must be a number.
Fix: the list of listeners must be a list, not an empty object, for the 
list methods to work.
complete copy/move part 1.
refactoring
started directory case